SHSAT English Language Arts Quiz: Sentence Combining
20 questions · exam conditions
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Sentence CombiningQuestion 1 of 20

(1) Photosynthesis is a process used by plants. (2) They use sunlight to synthesize foods from carbon dioxide and water. (3) Oxygen is released as a byproduct.

Which sentence best combines these ideas?

Photosynthesis is a process where plants use sunlight to synthesize foods from carbon dioxide and water, releasing oxygen as a byproduct.
Plants use photosynthesis to synthesize foods from carbon dioxide and water with sunlight, and oxygen is released as a byproduct.
Oxygen is released as a byproduct when plants use photosynthesis, a process using sunlight to synthesize foods from carbon dioxide and water.
In photosynthesis, a process used by plants, they use sunlight to synthesize foods from carbon dioxide and water, so oxygen is released.
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SHSAT English Language Arts Quiz

SHSAT English Language Arts Quiz: Sentence Combining

Practice Sentence Combining in SHSAT English Language Arts with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Sentence Combining, giving you a quick way to practice the rules, question types, and explanations that matter most for SHSAT English Language Arts.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

(1) Photosynthesis is a process used by plants. (2) They use sunlight to synthesize foods from carbon dioxide and water. (3) Oxygen is released as a byproduct.

Which sentence best combines these ideas?

  1. Photosynthesis is a process where plants use sunlight to synthesize foods from carbon dioxide and water, releasing oxygen as a byproduct. (correct answer)
  2. Plants use photosynthesis to synthesize foods from carbon dioxide and water with sunlight, and oxygen is released as a byproduct.
  3. Oxygen is released as a byproduct when plants use photosynthesis, a process using sunlight to synthesize foods from carbon dioxide and water.
  4. In photosynthesis, a process used by plants, they use sunlight to synthesize foods from carbon dioxide and water, so oxygen is released.
Explanation: When you encounter sentence combining questions on the SHSAT, you're being tested on your ability to merge multiple ideas into one clear, well-structured sentence while maintaining all the original meaning and creating smooth flow. Answer choice A is correct because it combines all three sentences seamlessly using a subordinate clause structure. It starts with the main concept (photosynthesis), defines what it is (a process where plants use sunlight...), and concludes with the result (releasing oxygen as a byproduct). The flow is logical and natural, moving from definition to process to outcome. Let's examine why the other choices fall short. Choice B creates an awkward construction with "synthesize foods from carbon dioxide and water with sunlight" — this phrasing suggests the foods are made "with sunlight" rather than sunlight being the energy source for the process. Choice C begins with the least important information (oxygen as a byproduct) rather than the main concept of photosynthesis, creating poor emphasis and flow. Choice D contains redundancy with "a process used by plants" followed immediately by "they use," which creates unnecessarily repetitive language. For SHSAT sentence combining questions, always look for the choice that maintains logical flow from most to least important information, avoids awkward prepositional phrases, and eliminates redundancy. The strongest combinations typically start with the main concept and build supporting details around it in a natural, readable way.

Question 2

(1) Bees are vital for pollination. (2) They transfer pollen between flowering plants. (3) This process is crucial for the production of many fruits and vegetables.

What is the best way to combine these sentences to clarify the relationship between the ideas?

  1. Bees are vital for pollination because they transfer pollen between flowering plants, a process crucial for the production of many fruits and vegetables. (correct answer)
  2. Bees are vital for pollination, and they transfer pollen between flowering plants, and this process is crucial for producing fruits and vegetables.
  3. Transferring pollen between flowering plants, bees are vital for pollination, which is a crucial process for the production of many fruits and vegetables.
  4. The production of many fruits and vegetables is crucial, so bees are vital for pollination by transferring pollen between flowering plants.
Explanation: When you encounter sentence combination questions, you're being tested on your ability to show clear logical relationships between ideas while maintaining smooth, concise writing. The key here is recognizing the cause-and-effect chain: bees transfer pollen → this enables pollination → pollination produces fruits and vegetables. The best combination should make this logical flow crystal clear. Choice A accomplishes this perfectly by using "because" to show why bees are vital for pollination, then using an appositive phrase ("a process crucial for...") to explain why pollination matters. This creates one fluid sentence that moves logically from the main claim to its supporting evidence. Choice B fails because it uses repetitive "and" conjunctions that don't clarify relationships—it just lists facts without showing how they connect. The meaning becomes choppy and unclear. Choice C creates confusion by starting with a participial phrase that makes the sentence structure awkward. The pronoun reference for "which" becomes ambiguous—does it refer to pollination or the transfer process? Choice D completely reverses the logical flow by suggesting that fruit/vegetable production causes bees to be important, rather than the other way around. This backwards causation distorts the intended meaning. Remember: when combining sentences, don't just link them—use connecting words that reveal the specific relationship between ideas. Words like "because," "since," "although," and "while" are more precise than simple conjunctions like "and" or "but." Always check that your combined sentence maintains the original logical flow.

Question 3

(1) Hedy Lamarr was a famous actress during Hollywood's Golden Age. (2) She was also a brilliant inventor. (3) She co-invented a frequency-hopping technology that later became crucial for Wi-Fi and Bluetooth.

What is the best way to combine these sentences?

  1. Hedy Lamarr, a famous actress during Hollywood's Golden Age and a brilliant inventor, co-invented a frequency-hopping technology that became crucial for Wi-Fi and Bluetooth. (correct answer)
  2. A famous actress during Hollywood's Golden Age, Hedy Lamarr was also a brilliant inventor, she co-invented a frequency-hopping technology crucial for Wi-Fi.
  3. Hedy Lamarr was a famous actress during Hollywood's Golden Age, but she was also a brilliant inventor who co-invented a crucial frequency-hopping technology.
  4. Although she co-invented a frequency-hopping technology that later became crucial for Wi-Fi, Hedy Lamarr was a famous actress and a brilliant inventor.
Explanation: When you encounter sentence combination questions, you're being tested on your ability to merge ideas smoothly while maintaining clarity and proper grammar. Look for the option that preserves all important information without creating run-on sentences or awkward constructions. Let's examine why choice A works best. It efficiently combines all three original sentences using an appositive phrase ("a famous actress during Hollywood's Golden Age and a brilliant inventor") that describes Hedy Lamarr. This structure keeps the main clause focused on her most significant achievement—the invention—while still including her acting career. The sentence flows naturally and maintains parallel structure. Now let's see why the other options fail. Choice B creates a comma splice error by incorrectly joining two independent clauses with just a comma ("inventor, she co-invented"). This is a serious grammatical mistake. Additionally, it omits the important detail about Bluetooth technology. Choice C, while grammatically correct, uses "but" to suggest contrast between being an actress and inventor, when the passage actually presents both as complementary aspects of her identity. The contrast isn't the main relationship between these ideas. Choice D misplaces emphasis by starting with her invention in a subordinate clause introduced by "although," making her most remarkable achievement seem less important than her fame as an actress. Study tip: When combining sentences, prioritize the most significant information for your main clause, ensure all key details are preserved, and avoid suggesting false relationships between ideas through your choice of connecting words.

Question 4

(1) Marie Curie was a pioneering physicist and chemist. (2) She conducted groundbreaking research on radioactivity. (3) She was the first woman to win a Nobel Prize.

What is the best way to combine these sentences?

  1. A pioneering physicist and chemist, Marie Curie's groundbreaking research on radioactivity led to her being the first woman to win a Nobel Prize.
  2. The first woman to win a Nobel Prize, Marie Curie was a pioneering physicist and chemist, and she conducted groundbreaking research on radioactivity.
  3. Marie Curie conducted groundbreaking research on radioactivity, she was a pioneering physicist and chemist and the first woman to win a Nobel Prize.
  4. Marie Curie was a pioneering physicist and chemist who conducted groundbreaking research on radioactivity, becoming the first woman to win a Nobel Prize. (correct answer)
Explanation: When you encounter sentence combination questions, you're being tested on your ability to create clear, grammatically correct, and well-flowing prose while preserving all the original information. The best approach maintains proper sentence structure while creating logical connections between ideas. Answer choice D accomplishes this perfectly: "Marie Curie was a pioneering physicist and chemist who conducted groundbreaking research on radioactivity, becoming the first woman to win a Nobel Prize." This version uses a relative clause ("who conducted") and a participial phrase ("becoming") to smoothly connect all three pieces of information in chronological order. Let's examine why the other options fail. Choice A creates a dangling modifier error - "A pioneering physicist and chemist" appears to modify "research" rather than "Marie Curie," making the sentence grammatically incorrect. Choice B, while technically correct, creates an awkward structure by front-loading the Nobel Prize information and using unnecessary coordination that makes the sentence feel choppy. Choice C commits a comma splice error by incorrectly joining two independent clauses with just a comma, which violates standard punctuation rules. Remember that effective sentence combination requires three elements: grammatical correctness, logical flow of ideas, and smooth transitions between concepts. Always check that modifying phrases clearly connect to the right nouns, avoid comma splices, and arrange information in a sequence that makes sense to readers. The strongest combinations typically use subordinating structures like relative clauses or participial phrases rather than just stringing ideas together with conjunctions.

Question 5

(1) Cheetahs are the fastest land animals. (2) They can reach speeds of up to 75 miles per hour. (3) They can only maintain these speeds for short distances.

Which sentence best combines this information?

  1. Cheetahs are the fastest land animals, and they can reach speeds of up to 75 miles per hour, but they can only maintain these speeds for short distances.
  2. Reaching speeds of up to 75 miles per hour, cheetahs are the fastest land animals, and they can only maintain these speeds for short distances.
  3. Cheetahs, the fastest land animals, can reach speeds of up to 75 miles per hour, however they can only maintain these speeds for short distances.
  4. Although they can reach speeds of up to 75 miles per hour, cheetahs, the fastest land animals, can only maintain these speeds for short distances. (correct answer)
Explanation: When you see a sentence-combining question, focus on how the ideas relate to each other logically. These three sentences present information that flows from general to specific, with an important limitation at the end. The correct answer is D because it uses "Although" to properly show the contrast between the cheetah's impressive speed capability and its limitation. This subordinating conjunction creates the most logical relationship: despite being able to reach incredible speeds, there's a significant drawback. The sentence structure also flows naturally, introducing cheetahs as "the fastest land animals" in an appositive phrase, then presenting the speed figure and limitation in a way that emphasizes the constraint. Choice A uses simple coordination with "and" and "but," which creates a choppy, list-like structure that doesn't highlight the key contrast effectively. Choice B starts with a participial phrase but then awkwardly combines the remaining information with "and," making the limitation feel like an afterthought rather than an important qualifier. Choice C has a serious punctuation error—it uses "however" with just a comma, creating a comma splice. "However" needs either a semicolon before it or to be part of a new sentence. For SHSAT sentence-combining questions, look for the choice that creates the smoothest logical flow while properly showing relationships between ideas. Pay special attention to contrast words like "although," "however," and "but"—they often signal the most important relationship in the passage. Also watch for punctuation errors, especially with transitional words like "however."

Question 6

(1) The printing press was invented in the 15th century. (2) Its invention is credited to Johannes Gutenberg. (3) It allowed for the mass production of books.

What is the best way to combine these sentences?

  1. The printing press allowed for the mass production of books, it was invented in the 15th century by Johannes Gutenberg.
  2. The printing press was invented in the 15th century, and its invention is credited to Johannes Gutenberg, and it allowed for the mass production of books.
  3. Invented in the 15th century by Johannes Gutenberg, the printing press allowed for the mass production of books. (correct answer)
  4. Johannes Gutenberg invented the printing press in the 15th century, so it allowed for the mass production of books.
Explanation: When you encounter sentence combining questions, you're being tested on your ability to merge ideas efficiently while maintaining proper grammar and logical flow. The goal is to create one smooth, well-constructed sentence that preserves all the original information without redundancy or awkward phrasing. Choice C works best because it uses a participial phrase ("Invented in the 15th century by Johannes Gutenberg") to efficiently combine the first two pieces of information, then flows naturally into the main clause about the printing press's function. This structure is concise, grammatically correct, and emphasizes the most important information—what the printing press accomplished. Choice A creates a comma splice, incorrectly joining two independent clauses with just a comma. This is a serious grammatical error that makes the sentence confusing to read. Choice B suffers from excessive coordination, stringing together multiple clauses with "and," which creates an awkward, choppy rhythm and feels repetitive rather than sophisticated. Choice D uses "so" incorrectly, suggesting that Gutenberg's invention caused mass production capability, when actually the mass production ability was an inherent feature of the printing press design. For sentence combining questions, look for the option that eliminates wordiness while maintaining all essential information. Participial phrases, appositives, and subordinate clauses are often more elegant than simply linking independent clauses with conjunctions. Always check that your combined sentence flows smoothly when read aloud and avoids common errors like comma splices or misplaced modifiers.

Question 7

(1) Spiders are arachnids, not insects. (2) They have eight legs. (3) Insects have six legs.

Which sentence best combines this information to highlight the contrast?

  1. Unlike insects which have six legs, spiders are arachnids and have eight legs.
  2. Spiders, which are arachnids, have eight legs, and insects have six legs.
  3. Spiders are arachnids with eight legs, not insects, which have six legs. (correct answer)
  4. Spiders are arachnids because they have eight legs, but insects have six legs.
Explanation: This question tests your ability to combine sentences while maintaining clear contrast and logical flow. When combining information that shows differences, you need to structure the sentence so the contrasting elements are clearly distinguished. Choice C correctly combines all the information while emphasizing the contrast between spiders and insects. The phrase "not insects" creates a direct opposition, and the sentence flows logically: spiders are arachnids with eight legs, as opposed to insects, which have six legs. This structure makes the comparison immediately clear to readers. Choice A has awkward phrasing with "Unlike insects which have six legs" at the beginning, making the sentence feel backward and harder to follow. While it contains the right information, the structure doesn't flow naturally. Choice B simply lists facts without emphasizing the contrast. The word "and" connects the ideas as if they're just additional information rather than highlighting the key difference between spiders and insects. Choice D incorrectly uses "because," suggesting that having eight legs is the reason spiders are arachnids, which creates a false cause-and-effect relationship. Spiders aren't arachnids because of their leg count—the leg count is simply one characteristic of being an arachnid. When combining sentences that show contrast, look for structures that use words like "not," "unlike," or "whereas" to clearly signal the difference. Avoid connectors like "because" unless there's a true cause-and-effect relationship, and watch out for combinations that simply list facts without emphasizing the intended contrast.

Question 8

(1) William Shakespeare wrote many famous plays. (2) These plays include Hamlet and Romeo and Juliet. (3) He is widely regarded as the greatest writer in the English language.

Which sentence best combines this information?

  1. William Shakespeare is the greatest writer in the English language; he wrote famous plays like Hamlet and Romeo and Juliet.
  2. William Shakespeare wrote many famous plays, including Hamlet and Romeo and Juliet, and is widely regarded as the greatest writer in the English language.
  3. Widely regarded as the greatest writer in the English language, William Shakespeare wrote famous plays like Hamlet and Romeo and Juliet.
  4. William Shakespeare, who wrote many famous plays such as Hamlet and Romeo and Juliet, is widely regarded as the greatest writer in the English language. (correct answer)
Explanation: When you encounter sentence combination questions, you're being tested on your ability to merge multiple ideas while maintaining clarity, flow, and proper emphasis. The key is finding the option that connects all the information smoothly without awkward construction or misplaced emphasis. Answer choice D creates the most natural and well-structured sentence by using a relative clause ("who wrote many famous plays such as Hamlet and Romeo and Juliet") to provide background information about Shakespeare, then states the main point about his reputation. This structure flows logically and emphasizes the right information. Let's examine why the other options fall short: Choice A uses a semicolon incorrectly and creates an awkward emphasis problem. The semicolon suggests equal weight between the two clauses, but the sentence structure makes Shakespeare's reputation feel like an afterthought. Choice B creates a run-on sentence that's grammatically correct but clunky. The string of information connected by "and" makes the sentence feel rushed and doesn't establish clear relationships between the ideas. Choice C has a misplaced modifier issue. "Widely regarded as the greatest writer" appears to modify "famous plays" rather than Shakespeare himself, creating confusion about what exactly is widely regarded. Remember that effective sentence combining isn't just about cramming information together—it's about creating smooth, logical flow. Look for options that use subordinate clauses or phrases to establish clear relationships between ideas, and always check that modifiers are placed next to what they're actually describing.

Question 9

(1) The first successful airplane flight occurred in 1903. (2) It was achieved by Orville and Wilbur Wright. (3) The flight lasted only 12 seconds.

Which sentence best combines this information?

  1. The first successful airplane flight, achieved in 1903 by Orville and Wilbur Wright, lasted only 12 seconds. (correct answer)
  2. In 1903, the first successful airplane flight was achieved by Orville and Wilbur Wright, and it lasted only 12 seconds.
  3. Lasting only 12 seconds, the first successful airplane flight was achieved by Orville and Wilbur Wright in 1903.
  4. Orville and Wilbur Wright achieved the first successful airplane flight in 1903, it lasted only 12 seconds.
Explanation: When you encounter sentence combining questions, you're being tested on your ability to merge multiple ideas smoothly while maintaining proper grammar and logical flow. The goal is to create one well-structured sentence that preserves all the original information without introducing errors. Choice A is correct because it uses an appositive phrase ("achieved in 1903 by Orville and Wilbur Wright") set off by commas to elegantly combine all three pieces of information. This structure keeps the main focus on "the first successful airplane flight" while seamlessly incorporating the who, when, and how long details. The sentence reads naturally and maintains proper grammatical structure. Choice B, while grammatically correct, is less effective because it uses a compound structure with "and" that makes the sentence feel choppy and less sophisticated. The coordination doesn't create as smooth a flow as the embedded appositive in choice A. Choice C changes the emphasis by starting with "Lasting only 12 seconds," which makes the duration the primary focus rather than the historic achievement itself. This shifts the logical emphasis away from what should be the main point. Choice D contains a comma splice error. It incorrectly joins two independent clauses with just a comma ("in 1903, it lasted only 12 seconds"). This creates a run-on sentence that violates basic punctuation rules. For sentence combining questions, look for the choice that integrates information most smoothly while maintaining grammatical correctness. Appositives and participial phrases often create more elegant combinations than simple coordination with "and."

Question 10

(1) The Statue of Liberty was a gift to the United States from France. (2) It was dedicated in 1886. (3) It has become a universal symbol of freedom.

What is the best way to combine these sentences?

  1. A gift to the United States from France, the Statue of Liberty was dedicated in 1886 and has become a universal symbol of freedom. (correct answer)
  2. The Statue of Liberty was a gift from France, dedicated in 1886, it has become a universal symbol of freedom.
  3. Becoming a universal symbol of freedom, the Statue of Liberty was a gift from France to the United States and was dedicated in 1886.
  4. The Statue of Liberty, which was dedicated in 1886, was a gift to the United States from France that has become a symbol of freedom.
Explanation: When you encounter sentence combining questions, you need to create a smooth, grammatically correct sentence that preserves all the original information while maintaining proper relationships between ideas. Option A works perfectly because it uses an appositive phrase ("A gift to the United States from France") to efficiently introduce the Statue of Liberty, then connects the remaining information with a clean compound predicate ("was dedicated in 1886 and has become a universal symbol of freedom"). The sentence flows naturally and maintains chronological order. Option B contains a comma splice error. After "dedicated in 1886," there's a comma followed by an independent clause ("it has become a universal symbol of freedom"), which creates a run-on sentence. You need either a semicolon, a coordinating conjunction, or a different structure to fix this. Option C has a logical flow problem. Starting with "Becoming a universal symbol of freedom" suggests this happened first, but chronologically, the statue was gifted first, then dedicated, and finally became a symbol over time. This structure confuses the sequence of events. Option D creates an awkward modifier issue. The phrase "that has become a symbol of freedom" could refer to either "France" or "the United States" rather than clearly referring to the Statue of Liberty itself, making the sentence ambiguous. For sentence combining questions, always check for three things: grammatical correctness (watch for comma splices and run-ons), logical flow of ideas, and clear pronoun/modifier references. The best combination will sound natural when read aloud.

Question 11

(1) Jane Austen wrote the novel Pride and Prejudice. (2) She published it anonymously in 1813. (3) The novel is now one of the most popular in English literature.

Which sentence best combines this information?

  1. Jane Austen wrote and anonymously published Pride and Prejudice in 1813; the novel is now one of the most popular in English literature.
  2. Jane Austen wrote Pride and Prejudice and published it anonymously in 1813, and the novel is now one of the most popular in English literature.
  3. Now one of the most popular novels in English literature, Jane Austen wrote Pride and Prejudice and published it anonymously in 1813.
  4. Pride and Prejudice, written by Jane Austen and published anonymously in 1813, is now one of the most popular novels in English literature. (correct answer)
Explanation: When you encounter sentence combination questions, you're being tested on your ability to merge ideas smoothly while maintaining proper grammar and logical flow. The key is finding the version that sounds most natural and places emphasis appropriately. Let's examine why choice D works best. It opens with the title Pride and Prejudice as the subject, followed by descriptive information about the author and publication details, then concludes with the novel's current status. This structure flows logically from the book's creation to its lasting impact, and the syntax is clean and professional. Choice A uses a semicolon correctly but creates an awkward phrasing with "wrote and anonymously published" - this compressed wording sounds unnatural. Choice B strings together too many clauses with "and," creating a run-on sentence that lacks sophistication. The repetitive conjunctions make it choppy rather than smooth. Choice C contains a serious grammatical error called a dangling modifier. The opening phrase "Now one of the most popular novels" should modify Pride and Prejudice, but instead it's followed by "Jane Austen," creating confusion about what is popular - Jane Austen or her novel. Choice D avoids all these pitfalls by using a well-structured sentence with the novel as the clear subject throughout, making the meaning unambiguous and the flow elegant. For sentence combination questions, read each option aloud mentally. The correct answer will sound natural and professional while avoiding grammatical errors like dangling modifiers or excessive coordination with "and."

Question 12

(1) The Sahara is the largest hot desert in the world. (2) It covers most of North Africa. (3) It is nearly the size of the United States.

What is the best way to combine these sentences?

  1. The Sahara is the largest hot desert in the world, and it covers most of North Africa, being nearly the size of the United States.
  2. Covering most of North Africa, the Sahara is the largest hot desert in the world and is nearly the size of the United States.
  3. The Sahara, the largest hot desert in the world, covers most of North Africa and is nearly the size of the United States. (correct answer)
  4. Nearly the size of the United States, the Sahara covers most of North Africa, and it is the largest hot desert in the world.
Explanation: When you encounter sentence combining questions, you're being tested on your ability to merge ideas smoothly while maintaining clarity and proper emphasis. The goal is to create a flowing, well-structured sentence that preserves all the original information without awkwardness or redundancy. Choice C works best because it uses an appositive construction—"the largest hot desert in the world"—set off by commas to provide essential identifying information about the Sahara. This structure then flows naturally into the main actions: "covers most of North Africa and is nearly the size of the United States." The sentence reads smoothly and emphasizes the Sahara as the subject throughout. Choice A creates an awkward construction with "being nearly the size of the United States." The word "being" makes this clause feel tacked on and disrupts the sentence's flow. Choice B starts with a participial phrase "Covering most of North Africa," which makes the geographical information seem less important than it should be, and the structure feels unbalanced. Choice D begins with "Nearly the size of the United States," placing this comparison at the beginning where it doesn't logically belong, and the phrase "and it is" creates unnecessary repetition of the subject. For sentence combining questions, look for the version that flows most naturally when read aloud and maintains logical emphasis. Avoid constructions with awkward participles ("being"), unnecessary repetition of subjects, or information placed in illogical positions. The smoothest combination typically keeps the main subject prominent while integrating details seamlessly.

Question 13

(1) The Moon has a much weaker gravitational pull than Earth. (2) Its gravity is only about one-sixth of Earth's gravity. (3) An astronaut can jump much higher on the Moon.

What is the best way to combine these sentences to show a cause-and-effect relationship?

  1. The Moon has a much weaker gravitational pull than Earth, its gravity being only about one-sixth of Earth's, therefore an astronaut can jump much higher there.
  2. An astronaut can jump much higher on the Moon, although the Moon has a weaker gravitational pull than Earth, about one-sixth as strong.
  3. Because the Moon's gravitational pull is only about one-sixth of Earth's, an astronaut can jump much higher on the Moon. (correct answer)
  4. The Moon's gravitational pull is much weaker than Earth's, but an astronaut can jump much higher there because its gravity is only one-sixth as strong.
Explanation: When you're asked to combine sentences to show cause-and-effect relationships, look for connecting words that clearly establish what causes what. The key is identifying which event or condition leads to which result. In this passage, the Moon's weak gravity (the cause) allows astronauts to jump higher (the effect). Choice C uses "Because" to introduce the cause and directly connects it to the effect with clear, concise language. This creates the strongest cause-and-effect structure by putting the cause first and immediately following it with the result. Choice A is problematic because it uses awkward phrasing ("its gravity being") and the connecting word "therefore" comes too late in the sentence, making the relationship unclear. The sentence also becomes unnecessarily wordy and hard to follow. Choice B actually suggests the opposite relationship by using "although," which indicates contrast rather than cause-and-effect. This connecting word suggests that jumping higher is surprising despite weak gravity, which contradicts the logical relationship. Choice D uses "but" to contrast the weak gravity with the jumping ability, then adds "because" at the end. This creates confusion by mixing contrast and causation in the same sentence. The structure suggests these facts oppose each other rather than showing how one leads to the other. Remember that cause-and-effect questions on the SHSAT reward clarity and precision. Look for subordinating conjunctions like "because," "since," or "as a result of" that clearly establish the causal relationship, and choose the option that puts the cause and effect in the most logical, straightforward order.

Question 14

(1) The Colosseum is an ancient amphitheater in the center of Rome, Italy. (2) It was the largest amphitheater ever built. (3) It could hold between 50,000 and 80,000 spectators.

What is the best way to combine these sentences?

  1. The Colosseum is an ancient amphitheater in Rome, it was the largest ever built and could hold 50,000 to 80,000 spectators.
  2. The Colosseum, an ancient amphitheater in Rome and the largest ever built, could hold between 50,000 and 80,000 spectators. (correct answer)
  3. Holding between 50,000 and 80,000 spectators, the Colosseum is an ancient amphitheater in Rome and was the largest ever built.
  4. The Colosseum was the largest amphitheater ever built, so it could hold 50,000 to 80,000 spectators in the center of Rome, Italy.
Explanation: When you encounter sentence combining questions, you're being tested on your ability to merge ideas smoothly while maintaining clarity and proper grammar. The goal is to create one well-structured sentence that preserves all the important information without awkward constructions or errors. Choice B effectively combines all three sentences by using an appositive phrase. The phrase "an ancient amphitheater in Rome and the largest ever built" sits between commas and provides descriptive information about the Colosseum. This structure flows naturally: subject (The Colosseum), descriptive details (the appositive), and main action (could hold spectators). All key information is preserved in logical order. Choice A creates a comma splice error by incorrectly joining two independent clauses with just a comma. This is a serious grammatical mistake that makes the sentence incorrect. Choice C, while grammatically acceptable, creates an awkward emphasis by starting with the capacity detail. This structure makes the spectator information seem more important than identifying what the Colosseum actually is, which disrupts the logical flow of ideas. Choice D distorts the meaning by suggesting a cause-and-effect relationship with "so" - implying the Colosseum could hold many people because it was the largest. The original sentences don't establish this causal connection. Additionally, this choice awkwardly places "in the center of Rome, Italy" at the end. For SHSAT sentence combining questions, look for the choice that maintains grammatical correctness while preserving the logical relationship between ideas. Watch out for comma splices and awkward emphasis that can make otherwise correct combinations feel unnatural.

Question 15

(1) Alexander Fleming was a Scottish physician. (2) He discovered the antibiotic substance penicillin in 1928. (3) His discovery has saved millions of lives.

What is the best way to combine these sentences?

  1. Saving millions of lives, Scottish physician Alexander Fleming discovered the antibiotic substance penicillin in 1928.
  2. Alexander Fleming was a Scottish physician, and he discovered penicillin in 1928, and his discovery has saved millions of lives.
  3. The discovery of penicillin in 1928 by Scottish physician Alexander Fleming has saved millions of lives.
  4. Alexander Fleming, a Scottish physician, discovered the antibiotic substance penicillin in 1928, a discovery that has saved millions of lives. (correct answer)
Explanation: When combining sentences, your goal is to create a single, clear sentence that preserves all the important information while maintaining proper flow and emphasis. Look for ways to eliminate redundancy and create logical connections between ideas. Choice D effectively combines all three sentences by using an appositive phrase ("a Scottish physician") to identify Fleming, maintaining the chronological order of events, and ending with a relative clause ("a discovery that has saved millions of lives") that emphasizes the impact of his work. This structure flows naturally and gives appropriate weight to each piece of information. Choice A creates a misleading cause-and-effect relationship by starting with "Saving millions of lives." This suggests Fleming discovered penicillin in order to save lives, when actually the life-saving happened as a result of his discovery. The chronology is backwards. Choice B uses repetitive coordinating conjunctions ("and...and") that create an awkward, choppy rhythm. While grammatically correct, this structure makes the sentence feel like a simple list rather than a sophisticated combination of related ideas. Choice C changes the subject from Fleming to "the discovery," which shifts the focus away from the person who made this important contribution. Additionally, it omits the word "antibiotic," losing some descriptive detail from the original sentences. Strategy tip: When combining sentences on the SHSAT, look for the choice that maintains logical chronology, preserves all key information, and uses sophisticated sentence structures like appositives and relative clauses rather than simple conjunctions.

Question 16

(1) Mount Everest is the highest mountain above sea level. (2) Its peak is 29,032 feet high. (3) It is part of the Himalayas.

What is the best way to combine these sentences?

  1. At 29,032 feet, Mount Everest is the highest mountain above sea level and is part of the Himalayas.
  2. Mount Everest is the highest mountain above sea level, its peak is 29,032 feet high, and it is part of the Himalayas.
  3. The highest mountain above sea level is Mount Everest, which is part of the Himalayas, and its peak is 29,032 feet high.
  4. Mount Everest, part of the Himalayas, is the highest mountain above sea level, with a peak of 29,032 feet. (correct answer)
Explanation: When you encounter sentence combining questions, you're being tested on your ability to merge related ideas smoothly while maintaining clarity and proper grammar. The goal is to create one well-structured sentence that flows naturally and emphasizes the most important information effectively. The correct answer is D because it combines all three pieces of information in the most polished and sophisticated way. Notice how it uses an appositive phrase ("part of the Himalayas") set off by commas to provide additional information about Mount Everest. The phrase "with a peak of 29,032 feet" flows smoothly at the end, creating a sentence that reads naturally while including all the essential details. Choice A awkwardly places the height measurement at the beginning with "At 29,032 feet," which creates an unnatural emphasis and disrupts the flow. Choice B commits a serious grammatical error by creating a comma splice—it incorrectly joins three independent clauses with just commas, which violates proper sentence structure rules. Choice C, while grammatically correct, feels choppy and unbalanced because it separates the height measurement from the main identification of Mount Everest with too many intervening words. For SHSAT sentence combining questions, look for the option that flows most naturally when read aloud and uses sophisticated punctuation techniques like appositives or participial phrases. Avoid choices with comma splices (independent clauses joined only by commas) and awkward word placement that makes the sentence sound stilted or unnatural.

Question 17

(1) The human brain weighs about three pounds. (2) It uses 20% of the body's oxygen and calories. (3) It is the control center of the nervous system.

What is the best way to combine these sentences?

  1. Weighing about three pounds, the human brain is the control center of the nervous system, using 20% of the body's oxygen and calories. (correct answer)
  2. The human brain is the control center of the nervous system, and it weighs about three pounds, and it uses 20% of the body's oxygen and calories.
  3. The human brain weighs about three pounds, but it is the control center of the nervous system that uses 20% of the body's oxygen and calories.
  4. The human brain weighs about three pounds, so it uses 20% of the body's oxygen and calories as the control center of the nervous system.
Explanation: When you encounter sentence combining questions, you're being tested on your ability to merge ideas smoothly while maintaining clear relationships between concepts. The key is finding the option that flows naturally and logically connects the information. Choice A effectively combines all three pieces of information using strong sentence structure. The participial phrase "Weighing about three pounds" efficiently incorporates the weight detail, while the main clause establishes the brain as the control center, and the participial phrase "using 20% of the body's oxygen and calories" adds the energy consumption fact. This creates a sophisticated, flowing sentence that connects related ideas about the brain's characteristics and function. Choice B fails because it uses repetitive "and" connectors, creating an awkward, choppy rhythm. The repeated "and it" structure makes the sentence feel like a simple list rather than a polished combination of related ideas. Choice C incorrectly uses "but" to connect the weight and function details. The word "but" signals contrast or opposition, which doesn't make sense here since the brain's weight and its role as control center aren't contradictory facts. Choice D misuses "so" to suggest that the brain's weight causes it to use 20% of oxygen and calories. This creates a false cause-and-effect relationship that isn't supported by the original sentences, which simply present three separate facts about the brain. When combining sentences on the SHSAT, look for options that use varied sentence structures (like participial phrases) and logical connectors that accurately reflect the relationships between ideas.

Question 18

(1) The Earth rotates on its axis. (2) This rotation causes the cycle of day and night. (3) The rotation takes approximately 24 hours to complete.

Which sentence best combines this information?

  1. The Earth's rotation on its axis, which takes approximately 24 hours to complete, causes the cycle of day and night. (correct answer)
  2. The Earth rotates on its axis, taking approximately 24 hours to complete, which causes the cycle of day and night.
  3. The cycle of day and night is caused by the Earth rotating on its axis, and this rotation takes approximately 24 hours to complete.
  4. The Earth rotates on its axis, so it takes approximately 24 hours to complete and causes the cycle of day and night.
Explanation: When you encounter sentence combining questions, you're being tested on your ability to merge multiple related ideas while maintaining clarity and proper grammatical structure. The goal is to create one fluid sentence that preserves all the original information without awkward phrasing or unclear relationships between ideas. Choice A correctly combines all three pieces of information with clear, logical structure. The phrase "which takes approximately 24 hours to complete" is properly placed as a non-restrictive clause that modifies "rotation," and the main clause clearly establishes the cause-and-effect relationship between Earth's rotation and the day-night cycle. The sentence flows naturally and maintains clarity. Choice B contains a misplaced modifier. The phrase "which causes the cycle of day and night" appears to modify "24 hours" rather than "rotation," creating confusion about what actually causes day and night. This grammatical error makes the sentence unclear. Choice C, while grammatically correct, is wordy and less elegant than choice A. It uses a compound structure with "and" that makes the sentence feel choppy rather than smoothly integrated. The information feels more like two separate thoughts connected rather than truly combined. Choice D creates illogical meaning with "so it takes approximately 24 hours." This suggests that rotation causes the 24-hour duration, when actually the 24-hour duration describes how long the rotation takes. The causal relationship is incorrectly implied. For sentence combining questions, look for the option that maintains all original meaning while creating the smoothest, most logical flow. Watch out for misplaced modifiers and incorrect causal relationships.

Question 19

(1) The Great Barrier Reef is the world's largest coral reef system. (2) It is located off the coast of Queensland, Australia. (3) It is composed of over 2,900 individual reefs.

Which sentence best combines the information provided?

  1. The Great Barrier Reef is located off the coast of Queensland, Australia, it is the world's largest coral reef system, and it is composed of over 2,900 reefs.
  2. Composed of over 2,900 individual reefs, the Great Barrier Reef is the world's largest coral reef system and is located off the coast of Queensland, Australia.
  3. The Great Barrier Reef, the world's largest coral reef system, is located off the coast of Queensland, Australia, and is composed of over 2,900 individual reefs. (correct answer)
  4. The world's largest coral reef system, the Great Barrier Reef, which is composed of over 2,900 individual reefs, is located off the coast of Queensland, Australia.
Explanation: When you encounter sentence combining questions, you're being tested on your ability to merge information smoothly while maintaining proper grammar and logical flow. The key is finding the option that presents all information clearly without grammatical errors or awkward phrasing. The correct approach here is to identify the main subject (Great Barrier Reef) and then efficiently incorporate the three pieces of information: its status as the world's largest coral reef system, its location off Queensland's coast, and its composition of over 2,900 reefs. Choice C accomplishes this perfectly by using an appositive phrase ("the world's largest coral reef system") right after the subject, then connecting the remaining information with a coordinating conjunction. This creates a natural, readable sentence that flows well. Choice A commits a comma splice error by incorrectly joining independent clauses with just commas instead of proper conjunctions. This creates a run-on sentence that violates basic grammar rules. Choice B, while grammatically correct, creates an awkward structure by leading with the participial phrase "Composed of over 2,900 individual reefs." This front-loading makes the sentence feel unbalanced and harder to follow. Choice D becomes unnecessarily complex with its embedded relative clause "which is composed of over 2,900 individual reefs." This creates a convoluted structure that, while grammatically acceptable, is less clear and direct than other options. For sentence combining questions, look for the option that maintains grammatical correctness while creating the smoothest, most natural flow. Avoid comma splices and overly complex constructions that make sentences harder to read.

Question 20

(1) The ancient city of Petra is famous for its rock-cut architecture. (2) It is also a UNESCO World Heritage site. (3) It is located in southern Jordan.

What is the best way to combine these sentences?

  1. The ancient city of Petra is famous for its rock-cut architecture, and it is a UNESCO World Heritage site in southern Jordan.
  2. Famous for its rock-cut architecture, the ancient city of Petra, a UNESCO World Heritage site, is located in southern Jordan. (correct answer)
  3. Located in southern Jordan, the ancient city of Petra is a UNESCO World Heritage site famous for its rock-cut architecture.
  4. The ancient city of Petra is in southern Jordan, it is famous for its rock-cut architecture and is a UNESCO World Heritage site.
Explanation: When you encounter sentence combination questions, you're being tested on your ability to merge related ideas smoothly while maintaining clarity and proper grammar. The goal is to create one fluid sentence that preserves all the original information without awkwardness or errors. The best combination here is choice B because it uses effective grammatical structures to connect the ideas seamlessly. The participial phrase "Famous for its rock-cut architecture" efficiently introduces the main subject, while the appositive phrase "a UNESCO World Heritage site" provides additional descriptive information set off by commas. This creates a sophisticated sentence that flows naturally from one idea to the next. Choice A creates an awkward construction by cramming the location into the second clause, making "a UNESCO World Heritage site in southern Jordan" sound like the site itself is in southern Jordan rather than the city being in southern Jordan. Choice C, while grammatically correct, buries the most distinctive feature (rock-cut architecture) at the end, making it feel like an afterthought rather than a key characteristic. Choice D commits a serious grammar error by using a comma splice—incorrectly joining two independent clauses with just a comma instead of proper punctuation or a conjunction. For sentence combination questions, look for the option that uses varied sentence structures (like participial phrases, appositives, or subordinate clauses) to create smooth, sophisticated writing. Avoid comma splices and awkward phrasing that makes relationships between ideas unclear.