- In a personal narrative, Noor described learning to skateboard at a neighborhood park. She fell often at first, but she kept practicing after school and on weekends. Because she wanted to land a clean ollie before summer ended. Which choice makes the sentence most grammatically acceptable?
Answer: Because she wanted to land a clean ollie before summer ended, she kept practicing.
This question tests your ability to identify and correct a sentence fragment. The original 'Because she wanted to land a clean ollie before summer ended' is a fragment—it's a dependent clause that cannot stand alone despite having a subject and verb. Choice B correctly attaches this dependent clause to the independent clause 'she kept practicing,' creating a complete complex sentence. Choice C incorrectly places a comma before 'because' when it introduces an essential reason, while Choice D incorrectly uses a semicolon before a dependent clause. Remember that clauses beginning with subordinating conjunctions like 'because' must be attached to an independent clause.
- Sarah enjoys hiking, biking, and to swim in her free time.
Answer: and swimming
The sentence lists three activities: 'hiking, biking, and ___ in her free time.' The rule is that every item in a series must take the same grammatical form, and because the first two items are -ing forms acting as nouns, the third must be one too, which makes 'and swimming' correct. Leaving the original 'and to swim' mixes an infinitive into a list of -ing forms, and 'and to swimming' is not a usable construction at all. 'Also swimming' has the right form but drops the coordinating conjunction that a three-item list needs before its final element. Read the first item in any list, then test each remaining item against it: if you have to change grammatical gears, that item is the error.
- At the school newspaper, the editors met to plan a special issue about local food. They brainstormed profiles of farmers, reviews of restaurants, and interviews with cafeteria staff. The team agreed to cover the topic by researching carefully, writing clearly, and they would meet deadlines. With roles assigned, everyone left the meeting with a list of sources to contact.
Which choice makes the sentence most grammatically acceptable?
Answer: The team agreed to cover the topic by researching carefully, writing clearly, and meeting deadlines.
This question tests parallel structure in a series of items. The original sentence lacks parallelism: 'researching carefully' (gerund phrase), 'writing clearly' (gerund phrase), and 'they would meet deadlines' (independent clause). For proper parallel structure, all items in a series must have the same grammatical form. Choice B correctly makes all three items gerund phrases: 'researching carefully,' 'writing clearly,' and 'meeting deadlines.' Choice C mixes gerund phrases with an infinitive ('to meet'), while Choice D combines different structures including an independent clause. Remember that items connected by 'and' or 'or' in a list must match in form—all nouns, all verbs, all phrases of the same type.
- For the robotics showcase, the team practiced explaining their design to visitors who might not know engineering terms. They prepared a short demo, a longer Q&A, and a handout. The handout included diagrams, step-by-step instructions, and explaining how the sensors work. To keep it readable, they limited each section to three bullet points.
Which choice makes the sentence most grammatically acceptable?
Answer: The handout included diagrams, step-by-step instructions, and an explanation of how the sensors work.
This question tests parallelism in a list, ensuring all items have the same grammatical structure. The original sentence lists 'diagrams,' 'step-by-step instructions,' and 'explaining how the sensors work,' but 'explaining' is a gerund phrase that doesn't match the noun forms of the first two items, breaking parallelism. Changing the third item to 'an explanation of how the sensors work' makes all items nouns, restoring parallel structure. Choice B correctly revises it to include 'diagrams, step-by-step instructions, and an explanation of how the sensors work.' Choice A retains the error, Choice C introduces 'to explain,' which is an infinitive mismatched with the nouns, and Choice D adds 'it explained,' creating a non-parallel clause. When checking lists, ensure all elements are parallel—such as all nouns, all gerunds, or all infinitives—to maintain clarity and grammatical consistency.
- For English class, students held a debate about whether schools should start later. One group cited research about sleep, and the other mentioned after-school jobs and sports. Although the discussion grew intense, but the moderator kept the tone respectful. Which choice makes the sentence most grammatically acceptable?
Answer: Although the discussion grew intense, the moderator kept the tone respectful.
This question tests proper use of subordinating conjunctions and coordination. The original sentence incorrectly uses both a subordinating conjunction ('Although') and a coordinating conjunction ('but') to connect the same clauses, creating redundant and grammatically incorrect structure. Choice B corrects this by using only the subordinating conjunction 'Although' to properly introduce the dependent clause, followed by the main clause. Choice C maintains the double conjunction error. Choice D incorrectly combines a semicolon with coordinating conjunction after the subordinating conjunction. Use either a subordinating conjunction or a coordinating conjunction, but not both, to connect clauses expressing contrast.
- The marching band practiced outside even when the weather turned windy. The brass section struggled to hear cues, so the drum major used larger arm motions. The band stayed focused, they repeated the tricky transition until it sounded clean. Which choice makes the sentence most grammatically acceptable?
Answer: The band stayed focused and repeated the tricky transition until it sounded clean.
This question tests comma splice recognition and correction. The original sentence contains a comma splice, incorrectly joining two independent clauses ('The band stayed focused' and 'they repeated the tricky transition until it sounded clean') with only a comma. Choice B correctly fixes this by using the coordinating conjunction 'and' to properly connect the clauses. Choice C incorrectly uses both a semicolon and a coordinating conjunction, which is redundant punctuation. Choice D creates a run-on sentence with multiple errors in comma usage. Comma splices must be corrected using proper coordination with conjunctions, appropriate punctuation, or sentence separation.
- In a workshop on public speaking, students practiced short introductions in front of small groups. The instructor reminded them to stand tall, make eye contact, and pause between ideas. After each introduction, the listeners offered feedback that was specific and encouraging. Many students said the supportive atmosphere made presenting less intimidating.
Which choice makes the sentence most grammatically acceptable?
Answer: NO CHANGE
This question tests the identification of complete sentences versus fragments, particularly with introductory phrases. The underlined portion is a complete sentence, as 'After each introduction' is a prepositional phrase followed by the independent clause 'the listeners offered feedback that was specific and encouraging,' with a clear subject and verb. The structure properly sets up the timing and action without errors. Choice A is correct as no change is needed to make it grammatically acceptable. Choice B incorrectly replaces the comma with a semicolon, disrupting the dependent phrase; C creates a fragment by removing the main verb; and D adds misplaced commas and omits necessary punctuation. Always check that introductory phrases are followed by a complete independent clause to avoid fragments.
- In history class, the teacher played recordings of speeches from different decades, and students compared how tone changes across time. Jordan took notes quickly, trying to capture repeated phrases and shifts in volume. He wanted to replay the last clip, he didn't want to miss the speaker's pause before the final line. After class, he asked for the link to the audio files.
Which choice makes the sentence most grammatically acceptable?
Answer: He wanted to replay the last clip; he didn't want to miss the speaker's pause before the final line.
This question tests the correction of a comma splice, where two independent clauses are incorrectly joined by only a comma. The original sentence has two independent clauses—'He wanted to replay the last clip' and 'he didn't want to miss the speaker's pause before the final line'—separated by a comma, which creates a run-on sentence. Using a semicolon properly joins the two closely related independent clauses without a conjunction. Choice D correctly uses a semicolon: 'He wanted to replay the last clip; he didn't want to miss the speaker's pause before the final line.' Choice A keeps the comma splice, Choice C adds an unnecessary comma at the end and uses 'and' improperly, and Choice B uses a colon incorrectly with an extra comma. A key strategy is to remember that two independent clauses can be joined with a semicolon, a period, or a comma plus a coordinating conjunction like 'and' or 'but.'
- During a community clean-up day, Maya organized volunteers into small teams and gave each team a map of the park. She reminded everyone to bring gloves, fill the bags completely, and keep an eye out for recyclables. After the first hour, the volunteers were tired, they kept working because the park looked noticeably better. Which choice makes the sentence most grammatically acceptable?
Answer: After the first hour, the volunteers were tired, but they kept working because the park looked noticeably better.
This question tests your ability to correct a comma splice—two independent clauses incorrectly joined by only a comma. The original sentence contains two complete thoughts: 'the volunteers were tired' and 'they kept working because the park looked noticeably better.' Choice B correctly fixes this error by adding the coordinating conjunction 'but' after the comma, creating a proper compound sentence. Choice C creates a fragment followed by another comma splice, while Choice D creates a run-on sentence by removing necessary punctuation. Remember that two independent clauses must be joined by a semicolon, a period, or a comma plus a coordinating conjunction (for, and, nor, but, or, yet, so).
- On a hiking trip, Kai carried a small notebook to record plants he recognized along the trail. He wrote quick descriptions, sketched leaf shapes, and noted where each plant grew. He didn't try to write perfect sentences; instead, using abbreviations and arrows. Later, he expanded his notes into a longer journal entry, adding details he remembered about the weather and the terrain.
Which choice makes the sentence most grammatically acceptable?
Answer: He didn't try to write perfect sentences; instead, he used abbreviations and arrows.
This question tests your ability to identify and correct sentence fragments. The original creates a fragment with 'instead, using abbreviations and arrows'—this phrase cannot stand alone as a complete sentence. Choice B correctly fixes this by making it a complete independent clause: 'he used abbreviations and arrows.' Choice C incorrectly places the semicolon after 'instead,' and Choice D creates a fragment after the semicolon. When using 'instead' as a transition, ensure what follows is a complete sentence with a subject and verb, not just a participial phrase.
- In a geology unit, students examined rocks collected from a nearby riverbed. They compared textures, tested hardness, and looked for mineral streaks. While Elena labeled samples carefully, Marcus photographed them, and the teacher checked their charts. Which choice makes the sentence most grammatically acceptable?
Answer: NO CHANGE
This question tests complex sentence structure with multiple clauses and proper coordination. The original sentence is grammatically correct, properly using a dependent clause ('While Elena labeled samples carefully') followed by two coordinated independent clauses ('Marcus photographed them, and the teacher checked their charts'). Choice B removes the subordinating conjunction, changing the meaning and structure. Choice C uses a semicolon incorrectly in place of proper coordination. Choice D creates a sentence fragment by placing a period after the dependent clause. Complex sentences with dependent clauses require proper coordination of any additional independent clauses that follow.
- The train was delayed due to mechanical issues, it arrived late.
Answer: due to mechanical issues; it
This item tests the comma splice. 'The train was delayed due to mechanical issues' and 'it arrived late' are both complete sentences, and a comma alone cannot join two complete sentences, which is exactly the flaw in the original 'due to mechanical issues, it.' A semicolon is a legitimate joiner for two closely related independent clauses, so 'due to mechanical issues; it' fixes the splice while preserving the cause-and-effect link. The version adding 'and' after the comma is grammatical, but the sentence would then state a cause and coordinate it as if it were a separate event, blurring the relationship the sentence is built on. 'Because it arrived late' inverts the logic entirely, making the lateness the reason for the delay. Whenever a comma sits between two word groups that could each stand alone, replace it with a semicolon, a period, or a comma plus a coordinating conjunction.
- Kai practiced a speech for student government in front of a mirror. He adjusted his volume, slowed his pace, and rewrote the opening line. So that the audience would understand his plan. He added a brief example from the school cafeteria. Which choice makes the sentence most grammatically acceptable?
Answer: So that the audience would understand his plan, he added a brief example from the school cafeteria.
This question tests sentence fragment recognition and correction. The original text contains a sentence fragment ('So that the audience would understand his plan.') that begins with a subordinating conjunction but lacks a main clause to complete the thought. Choice C correctly combines the fragment with the following sentence to create a complete, grammatically sound sentence with proper cause-and-effect relationship. Choice B maintains the fragment structure. Choice D changes the meaning by removing the subordinating conjunction. Sentence fragments beginning with subordinating conjunctions must be attached to independent clauses to express complete thoughts.
- The school newspaper ran a feature on students who commute in different ways. One student rode the bus, another walked, and a third biked along the river trail. The reporter asked about travel time, safety, and how much each student enjoyed to commute. She used the answers to compare the benefits of each route.
Which choice makes the sentence most grammatically acceptable?
Answer: The reporter asked about travel time, safety, and how much each student enjoyed commuting.
This item tests parallelism: items joined in a series must share the same grammatical form. The reporter asked about three things, and since the first two are noun phrases ('travel time' and 'safety'), the third must also work as a noun-like object of 'about' — 'how much each student enjoyed commuting' does, because the whole clause names a topic and 'enjoyed' takes the gerund 'commuting.' The original 'how much each student enjoyed to commute' keeps the right clause shape but pairs 'enjoyed' with an infinitive, which that verb does not accept. 'And each student enjoyed commuting' drops the 'how much' frame and drops a full independent statement into a list of topics, and 'to enjoy each student's commute' shifts to an infinitive phrase that no longer matches 'travel time' and 'safety.' Read a series as 'asked about X, Y, and Z' and make sure each slot could stand alone in that frame.
- During a weekend cleanup at Pine Creek, volunteers cataloged the trash they collected so the city could adjust the number of bins along the trail. The group worked in pairs and recorded the location of each bag before hauling it out. Because the creek bends sharply near the footbridge, and the current piles debris against the rocks. The coordinator suggested placing a bin near that bend to reduce litter drifting downstream.
Which choice makes the sentence most grammatically acceptable?
Answer: Because the creek bends sharply near the footbridge, the current piles debris against the rocks.
This question tests your ability to identify and correct a sentence fragment. The original sentence 'Because the creek bends sharply near the footbridge, and the current piles debris against the rocks.' is a fragment—it begins with the subordinating conjunction 'because' but lacks an independent clause to complete the thought. Choice B correctly removes the unnecessary 'and' to create a complete sentence with a dependent clause ('Because the creek bends sharply near the footbridge') followed by an independent clause ('the current piles debris against the rocks'). Choice C keeps the fragment structure and adds an incorrect comma-period combination. Choice D incorrectly places 'because' in the middle, creating an illogical cause-effect relationship. When you see a sentence beginning with 'because,' ensure it's followed by a complete independent clause.
- For a history project, Leo interviewed his grandmother about growing up near a railroad. He recorded the conversation, took notes, and later compared the details with newspaper archives. He wanted his report to be clear, to include vivid quotes, accurate dates, and explaining why the town changed. Which choice makes the sentence most grammatically acceptable?
Answer: to include vivid quotes, accurate dates, and to explain why the town changed.
This question tests parallel structure in infinitive phrases within a series. The original sentence breaks parallelism by mixing infinitive phrases ('to include vivid quotes,' 'accurate dates') with a gerund phrase ('explaining why the town changed'). Choice C maintains consistent parallel structure by using three infinitive phrases: 'to include,' 'accurate dates' (understood 'to include'), and 'to explain.' Choice B uses gerunds and participles inconsistently. Choice D shifts to a personal pronoun and changes verb form, breaking parallelism entirely. Items in a series must maintain the same grammatical structure—all infinitives, all gerunds, or all nouns.
- At the farmers' market, a musician played near the entrance while shoppers sampled peaches and tomatoes. The music was loud enough to hear across the stalls, it didn't drown out the conversations between vendors and customers. Which choice makes the sentence most grammatically acceptable?
Answer: but it didn't drown out the conversations between vendors and customers.
This question tests your ability to correct a comma splice. The original incorrectly joins two independent clauses ('The music was loud enough to hear across the stalls' and 'it didn't drown out the conversations') with only a comma. Choice B correctly fixes this by adding the coordinating conjunction 'but,' which shows contrast between the two ideas. Choice C attempts to fix the issue but creates an awkward construction with 'though' at the end, while Choice D uses 'and,' which doesn't capture the contrasting relationship between the clauses. When two complete sentences express contrasting ideas, use 'but' to join them properly.
- The school cafeteria introduced a new system to reduce food waste. Students can choose a smaller portion, return unopened items, or place leftovers in a compost bin. The student council promoted the change, they made posters and gave announcements during homeroom. Which choice makes the sentence most grammatically acceptable?
Answer: and they made posters and gave announcements during homeroom.
This question tests comma splice recognition and correction. The original sentence contains a comma splice, incorrectly joining two independent clauses ('The student council promoted the change' and 'they made posters and gave announcements during homeroom') with only a comma. Choice D correctly fixes this by adding the coordinating conjunction 'and' to properly connect the clauses. Choice C creates a sentence fragment by removing the subject and verb. Choice B incorrectly places a period before a coordinating conjunction, creating a fragment. Comma splices require either a semicolon, a period, or a comma plus coordinating conjunction to connect independent clauses properly.
- For her history project, Lila interviewed her grandfather about the neighborhood where he grew up. He described a movie theater that used to stand on the corner and a bakery that sold warm rolls every morning. She recorded the interview on her phone, she also took notes in a notebook. Later, she compared the details to old photographs from the library.
Which choice makes the sentence most grammatically acceptable?
Answer: She recorded the interview on her phone; she also took notes in a notebook.
This question tests the correction of comma splices in compound sentences. The underlined portion is a comma splice because it joins two independent clauses with only a comma, without a coordinating conjunction or proper punctuation. Each clause has its own subject and verb, making them complete thoughts that cannot be connected solely by a comma. Choice B fixes this by replacing the comma with a semicolon, which is appropriate for joining two closely related independent clauses. Choice A retains the splice, C creates a run-on with an improper participial phrase, and D adds an unnecessary comma after 'notebook' and misplaced 'later.' A key strategy is to remember that two independent clauses cannot be joined with only a comma; use a period, semicolon, or comma plus coordinating conjunction.
- The storm passed, everyone emerged from their shelters.
Answer: and everyone emerged from their shelters
This question addresses comma splices between related independent clauses. The original sentence incorrectly joins 'The storm passed' and 'everyone emerged from their shelters' with only a comma. Choice D correctly adds the coordinating conjunction 'and' to show the sequence of events - first the storm passed, then people emerged. Choice C separates the clauses with a period, which is grammatically correct but loses the connection between the related events. Choice B uses 'so,' which implies causation rather than sequence. When two independent clauses describe related sequential events, a comma plus coordinating conjunction provides the best connection.
