- The travel writer described the coastal town as quiet in the _______ noon, however, the boardwalk filled with families, street musicians, and food vendors selling local seafood dishes.
Answer: morning. By
This question tests the punctuation between two independent clauses with a transitional phrase. "The travel writer described the coastal town as quiet in the morning" is a complete sentence, and "by noon, however, the boardwalk filled with families..." is also a complete sentence. These independent clauses need to be separated by a period or semicolon, not just a comma. Since "By noon" starts a new time frame and contrasts with "in the morning," a period creates the clearest break. Choice A creates a comma splice, choice B could work but is less clear than starting a new sentence with the time transition, and choice D incorrectly adds "and" when the sentences show contrast, not addition.
- Which choice completes the sentence so that it conforms to the conventions of Standard English?
Answer: metals, including iron and copper,
This question tests your understanding of comma usage with nonessential information. When you encounter sentences with descriptive phrases or examples, you need to determine whether that information is essential or nonessential to the sentence's meaning.
The phrase "including iron and copper" provides examples of metals that conduct electricity, but it's not essential to the main point of the sentence. The sentence "Several metals can conduct electricity" is complete and meaningful without the examples. When information is nonessential (also called nonrestrictive), it should be set off with commas on both sides if it appears in the middle of a sentence, or with a comma before it if it appears at the end.
Choice A correctly places commas both before and after "including iron and copper" because this phrase interrupts the flow between "metals" and "can conduct electricity." The commas properly set off the nonessential information.
Choice B omits the necessary comma after "copper," leaving the nonessential phrase improperly integrated into the sentence. Choice C places a comma before the phrase but fails to include the comma after it, which is required when nonessential information appears mid-sentence. Choice D incorrectly places a comma between "iron" and "and," which disrupts the simple list structure within the phrase.
Remember this pattern: when nonessential information interrupts a sentence, it needs commas on both sides. If you can remove the phrase and the sentence still makes complete sense, those commas are your signal that the information is nonessential.
- During a community garden meeting, the coordinator reviewed the plan for spring planting and reminded volunteers to label each row _______ the garden's records stay accurate, new helpers can identify seedlings, and the harvest can be tracked by plot number throughout the season.
Answer: clearly so that
This question tests the punctuation needed before a subordinate clause that explains purpose. The phrase "so that" introduces a dependent clause explaining why volunteers should label rows clearly, and this dependent clause cannot stand alone as a complete sentence. When a subordinate conjunction like "so that" connects a dependent clause to an independent clause, no punctuation is needed between them. Choice A incorrectly adds a comma, choice B incorrectly uses a semicolon (which requires two independent clauses), and choice D incorrectly creates a sentence fragment by placing a period before "So that."
- Which choice completes the text so that it conforms to the conventions of Standard English?
Answer: humidity and help the team adjust watering schedules
This question tests the coordination of parallel verb phrases sharing the same subject without unnecessary punctuation. The verbs 'measure' and 'help' are parallel actions performed by 'sensors,' forming a compound predicate that requires 'and' to connect them smoothly without creating a separation that implies independence. Choice A incorrectly inserts a comma, which disrupts the flow and suggests a pause not needed in a compound predicate; Choice B uses a semicolon, treating the phrases as independent clauses when they are not; and Choice D employs a period, fragmenting the second phrase. Parallel structures like this maintain balance in sentences, and connecting them with 'and' without punctuation ensures conciseness. To spot parallel verbs, check if they share a subject; if they do, avoid punctuation that would split them into separate clauses.
- Which choice completes the sentence so that it conforms to the conventions of Standard English?
Answer: because
This question tests your understanding of subordinating conjunctions and comma usage in complex sentences. When you encounter sentences with dependent and independent clauses, you need to determine the correct punctuation based on the relationship between the clauses.
The word "because" is a subordinating conjunction that introduces a dependent clause explaining why something happened. In this sentence, "We canceled the picnic" is the independent clause (complete thought), and "because dark clouds gathered" is the dependent clause (incomplete thought that depends on the main clause).
Choice C is correct because when a dependent clause introduced by a subordinating conjunction follows an independent clause, no comma is needed. The sentence flows naturally: "We canceled the picnic because dark clouds gathered."
Choice A is wrong because placing a comma after "because" incorrectly separates the subordinating conjunction from its clause, creating an awkward and grammatically incorrect pause. Choice B is incorrect because it places a comma before "because," which is unnecessary when the dependent clause follows the independent clause. (You would only use this comma if the dependent clause came first: "Because dark clouds gathered, we canceled the picnic.") Choice D is wrong because a semicolon is used to connect two independent clauses of equal importance, but "because dark clouds gathered" is a dependent clause that cannot stand alone.
Remember: When a "because" clause comes after the main clause, don't use any punctuation between them. Only use a comma when the "because" clause starts the sentence.
- Which choice correctly completes the sentence?
Answer: its
This question tests your understanding of possessive pronouns versus contractions, a common source of confusion in English grammar. When you see "its" versus "it's," you need to determine whether the sentence requires possession or a contraction.
The correct answer is A) "its" because the sentence shows possession - the pricing model belongs to the company. "Its" is the possessive form of "it," just like "his" or "her" for people. Notice that possessive pronouns never use apostrophes.
Choice B) "it's" is incorrect because this is a contraction meaning "it is" or "it has." If you substitute "it is" into the sentence ("The company adjusted it is pricing model"), it makes no grammatical sense.
Choice C) "its'" is incorrect because this form doesn't exist in English. You might think you need an apostrophe for possession, but possessive pronouns (its, his, hers, ours, yours, theirs) never take apostrophes.
Choice D) "its's" is also incorrect - this is simply not a real word in English. Some students create this by mistakenly combining the possessive "its" with an additional apostrophe-s.
Strategy tip: Use the substitution test. If you can replace the word with "it is" and the sentence still makes sense, use "it's." If not, and you're showing that something belongs to "it," use "its" without any apostrophe. Remember: possessive pronouns are naturally possessive and don't need apostrophes to show ownership.
- Which choice completes the text so that it conforms to the conventions of Standard English?
Answer: claims: the policy would save money, it would reduce traffic, and it would improve safety.
This question tests the use of a colon to introduce a list that elaborates on or exemplifies a preceding independent clause. The clause 'The speaker made three main claims' is independent and complete, setting up the list of specific claims, so a colon is needed to introduce them formally. Choice A uses a comma, which is insufficient for introducing a detailed list and creates a less structured feel; Choice B employs a semicolon, better suited for joining independent clauses than introducing lists; and Choice D uses a period, fragmenting the list into a non-sentence with improper capitalization. Colons signal that what follows explains or specifies the previous statement, enhancing clarity in lists. When a sentence ends with a word like 'claims' followed by examples, check for a colon; it's especially useful if the list items are phrases rather than a simple series.
- The museum's new exhibit explains how early photographers worked with fragile glass plates, and it includes a short video demonstration. Visitors often linger in the final room because the curator offers a clear _______.
Answer: takeaway: the earliest images required patience, careful chemistry, and steady hands
This question tests the use of a colon to introduce an explanation or appositive that defines or clarifies the preceding term in an independent clause. The phrase before the blank is an independent clause ('the curator offers a clear takeaway'), and the following clause 'the earliest images required patience, careful chemistry, and steady hands' directly explains what the takeaway is, making a colon the appropriate punctuation for this elaboration. Choice A uses a comma, resulting in a comma splice since both parts are independent clauses that could stand alone. Choice C employs a semicolon, which joins related independent clauses but doesn't emphasize the explanatory role as effectively as a colon here, and Choice D uses a period but fails to capitalize the following word, creating a fragment-like error. To distinguish between semicolon and colon, consider whether the second part explains or exemplifies the first; if it does, a colon is often the better choice.
- Which choice completes the sentence with correct punctuation?
Answer: twenty-four
When you encounter compound numbers (numbers made up of two or more words), you need to understand the hyphenation rules that govern how they should be written.
The correct answer is A) "twenty-four" because compound numbers from twenty-one through ninety-nine should always be hyphenated when written out as words. The hyphen connects the two parts of the number into a single unit, making it clear that "twenty" and "four" work together to represent the number 24.
Looking at the incorrect options: B) "twenty, four" uses a comma, which incorrectly separates the two parts of the number as if they were items in a list rather than components of a single number. C) "twenty; four" uses a semicolon, which is completely inappropriate here since semicolons are used to separate independent clauses or complex list items, not parts of a number. D) "twenty four" omits any punctuation entirely, which violates the standard rule requiring hyphens in compound numbers.
This hyphenation rule applies consistently to all compound numbers in this range, whether you're writing "thirty-seven," "fifty-six," or "eighty-nine." However, remember that larger numbers like "one hundred" or "two thousand" don't require hyphens because they aren't compound in the same way.
Study tip: Whenever you write out numbers twenty-one through ninety-nine, always use a hyphen. This is a firm rule in English that appears frequently on standardized tests, so memorizing this range will serve you well.
- Which choice completes the text so that it conforms to the conventions of Standard English?
Answer: idea; others
This question tests punctuation between two independent clauses showing contrast. 'Several members supported the idea' can stand alone as a complete sentence, and 'others worried about staffing and security costs' is also a complete sentence with its own subject and verb. These two clauses present contrasting viewpoints in the debate, making a semicolon the ideal choice to join them while showing their close relationship. Choice A creates a comma splice by using only a comma between independent clauses, choice C incorrectly runs them together with no punctuation, and while choice D (period) is grammatically correct, the semicolon better emphasizes the balanced opposition between supporters and those with concerns.
- Which choice completes the text so that it conforms to the conventions of Standard English?
Answer: practice; it
This question tests punctuation between two independent clauses that show contrast. The first clause 'The rover performed well in practice' is complete, and the second clause 'it struggled during the timed trial...' is also independent with its own subject and verb. These two clauses present contrasting information (performed well vs. struggled), making them closely related but grammatically independent. A semicolon is the ideal punctuation here because it connects the related independent clauses while showing their contrast without needing a conjunction. Choice A would create a comma splice, choice C misuses the colon (which typically introduces explanations or lists), and choice D incorrectly runs the sentences together without any punctuation.
- The hiking guide recommended packing a few essentials for the day trip: a full water bottle, a map, and a light jacket. She also suggested checking the forecast before _______ storms can form quickly in the mountains even on warm afternoons.
Answer: leaving, because
This question tests punctuation with subordinating conjunctions like 'because'. The word 'because' introduces a dependent clause that explains why you should check the forecast—it cannot stand alone as a sentence. When a dependent clause beginning with 'because' follows an independent clause, you typically use a comma to separate them. Choice A correctly uses a comma before 'because', properly connecting the independent clause to its explanatory dependent clause. Choice B incorrectly uses a semicolon (which joins independent clauses), choice C omits necessary punctuation, and choice D incorrectly treats 'Because storms can form...' as an independent sentence, creating a fragment.
- Which choice completes the text so that it conforms to the conventions of Standard English?
Answer: changes: repainting
This question tests the use of a colon to introduce a list. The phrase before the blank ('Her proposal included several small changes') sets up an expectation that specific examples will follow, and the text after the blank provides exactly that—a list of three specific changes. A colon is the correct punctuation mark to introduce this explanatory list. Choice A (comma) is too weak for introducing a list, choice B (semicolon) is used between independent clauses not for introducing lists, and choice D (period) would incorrectly fragment the sentence since 'repainting crosswalks...' cannot stand alone.
- Which choice completes the sentence with correct punctuation?
Answer: ;
This question tests your understanding of how to connect two independent clauses when the second clause contains a transitional word like "however."
When you have two complete sentences joined by a transitional word such as "however," "therefore," "moreover," or "nevertheless," you need a semicolon before the transition and a comma after it. In this case, "The research appears promising" is a complete sentence, and "however, more trials are necessary" is also a complete sentence with "however" as a transitional connector. The correct punctuation is a semicolon before "however," making choice A correct.
Choice B (comma) creates a comma splice error. A comma alone cannot join two independent clauses, especially when there's a transitional word involved. This is one of the most common punctuation mistakes in formal writing.
Choice C (colon) is incorrect because colons are used to introduce lists, explanations, or examples that directly support what comes before. "However" signals contrast, not explanation, so a colon doesn't fit the relationship between these clauses.
Choice D (dash) could work in some contexts to show a sharp contrast, but it's not the standard punctuation for transitions like "however." The semicolon is the conventional and preferred choice in formal writing.
Remember this pattern: semicolon + transitional word + comma. Whenever you see transitions like "however," "therefore," or "furthermore" connecting two complete thoughts, look for the semicolon option. This construction appears frequently on standardized tests.
- Which choice completes the text so that it conforms to the conventions of Standard English?
Answer: sensitive even
This question tests punctuation within a dependent clause. The word 'Because' at the beginning of the sentence makes everything that follows part of a single dependent clause explaining why the instructor asked everyone to silence their phones. Within this dependent clause, 'even a single notification could interrupt the recording' provides additional detail about how sensitive the microphones were—it's not a separate clause but a continuation of the same thought. No punctuation is needed before 'even' since it's all part of the same dependent clause. Choices A, B, and D incorrectly add punctuation that would fragment this unified dependent clause.
- Which choice completes the text so that it conforms to the conventions of Standard English?
Answer: chemist's, and
This question tests possessive forms, specifically singular possessive. The sentence indicates that one solution belongs to 'the chemist' (singular), so we need the possessive form of a singular noun. To form the possessive of a singular noun, add an apostrophe and 's' ('chemist's'). Choice A correctly shows singular possession with 'chemist's', indicating the solution belongs to one chemist. Choice B ('chemists') is simply plural with no possession, choice C ('chemists'') shows plural possession (multiple chemists owning something), and choice D ('chemist') is singular but not possessive. When you see answer choices with different apostrophe placements, identify whether the noun is singular or plural and whether it needs to show ownership.
- Which choice completes the sentence with correct punctuation?
Answer: cost-effective
When you encounter compound modifiers—two or more words working together to describe a noun—you need to determine whether they should be hyphenated. The key question is whether the words function as a single unit to modify the noun that follows.
In this sentence, "cost" and "effective" work together as a compound adjective describing what type of solution the lab developed. When compound adjectives appear before the noun they modify, they typically require hyphens to show they function as one descriptive unit. Without the hyphen, readers might initially interpret "cost" as a separate noun, creating momentary confusion about the sentence's meaning.
Choice C is correct because "cost-effective" properly uses a hyphen to connect the compound adjective that modifies "solution."
Choice A creates ambiguity by separating "cost" and "effective," which could mislead readers into thinking "cost" is a noun rather than part of a compound modifier. Choice B incorrectly uses a semicolon, which is reserved for connecting independent clauses or separating complex list items—not for joining parts of compound adjectives. Choice D inappropriately uses a comma, which would separate rather than unite the two words that need to work together as a single descriptive unit.
Remember this pattern: when two or more words team up to describe a noun and come before that noun, they usually need hyphens to signal their partnership. Common examples include "well-known author," "state-of-the-art technology," and "long-term effects." This hyphenation helps readers immediately recognize the compound modifier as one cohesive description.
- Which choice correctly completes the sentence?
Answer: i.e., settlements with fewer than 5,000 residents,
This question tests your understanding of punctuation rules for the Latin abbreviation "i.e." (meaning "that is" or "in other words"). When you encounter "i.e." in formal writing, you need to know both comma placement and how it functions within sentence structure.
The correct answer is C because "i.e." requires a comma both before and after it when introducing a clarifying phrase. The phrase "settlements with fewer than 5,000 residents" explains what "small towns" means, so it needs to be set off with commas on both sides. Think of "i.e." as similar to "in other words" — you would naturally pause before and after such an expression.
Choice A omits the crucial comma after "i.e.," which violates standard punctuation rules. Choice B places the comma after "i.e." but fails to include the closing comma after "residents," leaving the clarifying phrase improperly integrated into the sentence. Choice D incorrectly places a comma after "settlements," which breaks up the essential phrase "settlements with fewer than 5,000 residents" and creates confusion about what exactly has fewer than 5,000 residents.
Remember this pattern: when using "i.e." to clarify or restate something, always sandwich it between commas — comma before "i.e.," comma after "i.e.," and another comma to close the entire clarifying phrase. The same rule applies to "e.g." (meaning "for example"). This punctuation creates clear, readable sentences that properly signal to readers when you're providing additional explanation.
- Which choice completes the text so that it conforms to the conventions of Standard English?
Answer: quickly, which
This question tests punctuation before a relative clause beginning with 'which.' The clause 'which suggested that a reaction was releasing energy' is a nonrestrictive relative clause—it adds extra information about the temperature rising quickly but isn't essential to identify what rose quickly. Nonrestrictive relative clauses beginning with 'which' should be preceded by a comma. Choice B incorrectly uses a semicolon (which joins independent clauses, but 'which suggested...' cannot stand alone), choice C omits necessary punctuation, and choice D creates a fragment since 'which suggested...' cannot stand as its own sentence.
- A student is revising an essay about a city park and wants to add a nonessential detail about the pond. The sentence reads, "The _______," and the student wants punctuation that correctly sets off the nonrestrictive clause. The sentence should remain one complete, clear statement. Which choice completes the text so that it conforms to the conventions of Standard English?
Answer: pond, which was restored last year, now supports frogs and dragonflies
This question tests the use of commas to set off a nonrestrictive relative clause that provides additional, nonessential information. The clause 'which was restored last year' adds descriptive detail about 'the pond' but is not essential to the sentence's meaning, so it requires commas on both sides to enclose it, with the blank providing the first comma before 'which.' Choice A omits the comma, creating a run-on by not separating the nonrestrictive clause; Choice C uses a semicolon, which incorrectly splits the sentence as if the clause were independent; and Choice D employs a colon, which is for introductions, not enclosures. Nonrestrictive clauses beginning with 'which' offer extra facts and use commas like parentheses for separation. To distinguish restrictive from nonrestrictive, remove the clause; if the sentence's core meaning remains unchanged, it's nonrestrictive and needs commas.
