English Grammar & Syntax Quiz: Avoiding Fragments Dependent Clauses
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Avoiding Fragments Dependent ClausesQuestion 1 of 10

The archive planned to reopen the reading room on Monday. Because several boxes had been mislabeled during the move. The staff postponed the reopening until Thursday.

Which revision of the second and third sentences most effectively corrects the fragment while preserving the intended cause-and-effect relationship?

Because several boxes had been mislabeled during the move, the staff postponed the reopening until Thursday.
Several boxes had been mislabeled during the move; because the staff postponed the reopening until Thursday.
Because several boxes had been mislabeled during the move. Therefore, the staff postponed the reopening until Thursday.
Several boxes had been mislabeled during the move, the staff postponed the reopening until Thursday.
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English Grammar & Syntax Quiz

English Grammar & Syntax Quiz: Avoiding Fragments Dependent Clauses

Practice Avoiding Fragments Dependent Clauses in English Grammar & Syntax 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 Avoiding Fragments Dependent Clauses, giving you a quick way to practice the rules, question types, and explanations that matter most for English Grammar & Syntax.

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

The archive planned to reopen the reading room on Monday. Because several boxes had been mislabeled during the move. The staff postponed the reopening until Thursday.

Which revision of the second and third sentences most effectively corrects the fragment while preserving the intended cause-and-effect relationship?

  1. Because several boxes had been mislabeled during the move, the staff postponed the reopening until Thursday. (correct answer)
  2. Several boxes had been mislabeled during the move; because the staff postponed the reopening until Thursday.
  3. Because several boxes had been mislabeled during the move. Therefore, the staff postponed the reopening until Thursday.
  4. Several boxes had been mislabeled during the move, the staff postponed the reopening until Thursday.
Explanation: When you spot a group of words beginning with a subordinating conjunction like because, although, or since, ask yourself: does this have an independent clause attached to it? If not, you're looking at a fragment — a dependent clause that can't stand alone as a sentence. In the original passage, "Because several boxes had been mislabeled during the move" is exactly that kind of fragment. It sets up a cause but leaves the effect dangling. The fix requires attaching this dependent clause to an independent clause that delivers the result. Option A does this perfectly. By placing the dependent clause first and following it with a comma and the independent clause ("the staff postponed the reopening until Thursday"), it creates a grammatically complete sentence that clearly signals cause and effect. This is the correct structure. Option B creates a different problem: a semicolon is used to join two clauses, but the second clause begins with because, making it dependent rather than independent. You cannot join a dependent clause to an independent one with a semicolon — that punctuation mark requires independent clauses on both sides. Option C looks like it keeps because but actually repeats the original error. Ending with a period after "during the move" leaves the dependent clause as a fragment all over again. Adding "Therefore" to start a new sentence doesn't rescue the broken clause before it. Option D drops because entirely, which removes the explicit cause-and-effect signal the question asks you to preserve. It also creates a comma splice — two independent clauses incorrectly joined by just a comma. Remember this rule: a dependent clause (starting with because, although, etc.) must be attached to an independent clause, never left alone with a period.

Question 2

The museum kept the special gallery open for an extra week. Although attendance had initially been lower than expected. A favorable review later generated renewed interest.

Which revision most effectively eliminates the fragment while preserving the contrast between the initial attendance and the museum's decision?

  1. Although attendance had initially been lower than expected, the museum kept the special gallery open for an extra week after a favorable review generated renewed interest. (correct answer)
  2. Attendance had initially been lower than expected; although the museum kept the gallery open for an extra week, a favorable review later generated renewed interest.
  3. Although attendance had initially been lower than expected. The museum kept the gallery open for an extra week, and a favorable review later generated renewed interest.
  4. Attendance had initially been lower than expected, so the museum kept the gallery open for an extra week because a favorable review had generated renewed interest.
Explanation: When you see a question combining fragment correction with a content requirement (here, "preserving contrast"), you need to evaluate both grammar AND meaning simultaneously — not just find the option that sounds complete. The original passage has a clear problem: "Although attendance had initially been lower than expected" is a subordinate clause standing alone as a sentence. Words like although, because, and while create dependent clauses that must attach to an independent clause. The question also asks you to keep the contrast between low attendance and the museum's decision to stay open — meaning that tension should be the structural heart of the revision. Choice A accomplishes both goals perfectly. It attaches the although clause directly to the main clause about the museum's decision ("kept the gallery open"), making the contrast explicit and grammatically complete. The favorable review is correctly placed as supporting context at the end. Choice B is grammatically awkward because it uses a semicolon before although, then buries the contrast inside a dependent clause rather than foregrounding it. The logical relationship becomes muddled. Choice C still contains the original fragment — "Although attendance had initially been lower than expected" remains a standalone sentence followed by a period. Changing surrounding punctuation doesn't fix a dependent clause left isolated. Choice D eliminates the although entirely and replaces contrast with causation (so...because), fundamentally distorting the meaning. The passage implies the museum kept the gallery open despite low attendance, not because of any sequence of cause-and-effect. A helpful rule of thumb: whenever although opens a sentence, immediately check whether it's connected to an independent clause — if it ends in a period alone, it's always a fragment.

Question 3

The ethics panel may request a second review. If the newly disclosed emails alter the timeline that witnesses originally described. Its decision will be announced Friday.

The writer intends to show that the panel's request for another review is conditional on the significance of the emails. Which revision best corrects the fragment and preserves that meaning?

  1. The ethics panel may request a second review. If the emails alter the timeline witnesses described, its decision will be announced Friday.
  2. The ethics panel may request a second review; if the newly disclosed emails alter the timeline that witnesses originally described.
  3. The newly disclosed emails alter the timeline that witnesses originally described, the ethics panel may request a second review.
  4. The ethics panel may request a second review if the newly disclosed emails alter the timeline that witnesses originally described. (correct answer)
Explanation: When a sentence expresses a condition ("if this happens, then that follows"), the conditional clause must be grammatically attached to the main clause — not left floating on its own. That's the core issue here: a subordinating conjunction like if introduces a dependent clause, which cannot stand alone as a sentence. The original passage breaks the conditional idea into three separate sentences, leaving "If the newly disclosed emails alter the timeline..." as a fragment — it has no main clause to complete its meaning. The revision needs to (1) fix the fragment and (2) make the review conditional on the emails' significance. Choice D does exactly this: "The ethics panel may request a second review if the newly disclosed emails alter the timeline that witnesses originally described." The if-clause is now properly embedded within the sentence, making the review conditional on the emails. This is your answer. Choice A removes "newly disclosed" (changing the meaning slightly) and awkwardly separates the conditional from the main claim about the review — it attaches the if-clause to the announcement instead, distorting the intended logic. Choice B uses a semicolon before the if-clause, which doesn't work. A semicolon joins two independent clauses, but a dependent if-clause is not independent — this creates a different kind of fragment rather than fixing the original one. Choice C drops the if entirely, turning what should be a conditional clause into a declarative statement. This changes the meaning: instead of saying the emails might alter the timeline, it asserts that they do. When you spot a fragment beginning with if, because, although, or similar subordinators, ask yourself: what main clause is this attached to? If it's floating alone, it must be joined to one.

Question 4

The field team remained at base until visibility improved. Although the forecast had predicted clear skies by noon. Which surprised the coordinators monitoring the launch.

Which revision corrects both dependent-clause fragments while preserving the contrast and the coordinators' reaction?

  1. The forecast had predicted clear skies by noon, although the field team remained at base until visibility improved. Which surprised the coordinators monitoring the launch.
  2. Although the forecast had predicted clear skies by noon, the field team remained at base until visibility improved, which surprised the coordinators monitoring the launch. (correct answer)
  3. Although the forecast had predicted clear skies by noon. The field team remained at base until visibility improved, which surprised the coordinators monitoring the launch.
  4. The forecast had predicted clear skies by noon, the field team remained at base until visibility improved, which surprised the coordinators monitoring the launch.
Explanation: When you spot a sentence beginning with although or which standing alone, your first instinct should be: this is likely a dependent-clause fragment. Dependent clauses need an independent clause to anchor them — they can't stand alone as sentences. The original passage has two such fragments: "Although the forecast had predicted clear skies by noon." and "Which surprised the coordinators monitoring the launch." Your job is to attach both to independent clauses while keeping the logical contrast and the coordinators' reaction intact. Answer B does exactly this. It opens with the subordinating conjunction although, which signals contrast, and immediately connects the dependent clause to an independent clause: "the field team remained at base until visibility improved." Then, the relative clause "which surprised the coordinators" is attached directly to that independent clause with a comma — grammatically correct, because which now has a clear antecedent (the delay despite the forecast). Both fragments are fixed, contrast is preserved, and the reaction is included. That makes B correct. Answer A fixes the which fragment by attaching it to... nothing — "Which surprised the coordinators monitoring the launch" is still a standalone fragment. It also reverses the logical contrast awkwardly. Answer C corrects the which fragment but leaves the although clause as its own sentence fragment, fixing only half the problem. Answer D eliminates although entirely, losing the contrast, and creates a comma splice by joining two independent clauses with only a comma. A useful strategy: whenever you see although, because, which, or that opening a sentence, verify it connects to an independent clause. If it doesn't, it's a fragment — and fixing it requires attachment, not just punctuation.

Question 5

Researchers selected a coating for the exterior panels. Which had resisted both salt spray and ultraviolet light in accelerated tests. Installation began the following week.

Which revision of the first two sentences correctly incorporates the dependent relative clause?

  1. Researchers selected a coating for the exterior panels; which had resisted both salt spray and ultraviolet light in accelerated tests.
  2. Researchers selected a coating for the exterior panels, which had resisted both salt spray and ultraviolet light in accelerated tests. (correct answer)
  3. Researchers selected a coating for the exterior panels. Which, in accelerated tests, had resisted salt spray and ultraviolet light.
  4. Because researchers selected a coating for the exterior panels, which had resisted salt spray and ultraviolet light in accelerated tests.
Explanation: When you encounter a sentence fragment that begins with a relative pronoun like "which," "who," or "that," your job is to reattach it to the independent clause it modifies. A relative clause cannot stand alone — it depends on a noun (its antecedent) to complete its meaning. In the original passage, "Which had resisted both salt spray and ultraviolet light in accelerated tests" is a fragment. It modifies "coating," so it must be joined directly to the sentence containing that noun. The correct fix is option B: attach the relative clause to the preceding independent clause using a comma. "Researchers selected a coating for the exterior panels, which had resisted both salt spray and ultraviolet light in accelerated tests" is now one complete, grammatically sound sentence — the relative clause flows naturally from "panels" and clarifies the coating. Option A uses a semicolon, which is wrong here. Semicolons join two independent clauses; a relative clause is dependent, so placing one after a semicolon creates a fragment all over again. Option C preserves the period, meaning "Which, in accelerated tests, had resisted salt spray and ultraviolet light" remains a fragment — moving the prepositional phrase around doesn't fix the core problem. Option D introduces "Because" before the main clause, which actually subordinates the wrong clause and creates a dangling, illogical construction; it implies the selection caused the resistance, which distorts the meaning entirely. Your takeaway: whenever a sentence begins with a relative pronoun ("which," "who," "that"), check whether it has its own subject-verb pair and whether it can stand alone logically. If not, it must be attached — with a comma, not a semicolon or period — to the clause containing its antecedent.

Question 6

The agency rejected the permit application. Because the site plan omitted the drainage channel that serves the northern lots.

Which revision forms one complete sentence and retains the original causal relationship?

  1. Because the site plan omitted the drainage channel that serves the northern lots. The agency rejected the permit application.
  2. The site plan omitted the drainage channel that serves the northern lots, the agency rejected the permit application.
  3. The agency rejected the permit application because the site plan omitted the drainage channel that serves the northern lots. (correct answer)
  4. The agency rejected the permit application; because the site plan omitted the drainage channel that serves the northern lots.
Explanation: When a sentence begins with "because," it introduces a dependent clause — a group of words that cannot stand alone as a complete thought. The original passage makes a classic error: it treats that dependent clause as its own sentence, creating a fragment. Your job here is to find the revision that correctly attaches the dependent clause to an independent clause while preserving the cause-and-effect meaning. Option C does this perfectly. By writing "The agency rejected the permit application because the site plan omitted the drainage channel that serves the northern lots," it joins the independent clause ("The agency rejected the permit application") directly to the subordinate clause ("because the site plan omitted..."). No punctuation separates them — which is exactly correct. The word because signals the cause, and the main clause delivers the effect, so the causal relationship is fully intact. Option A simply reverses the order of the two original sentences without fixing anything — "Because the site plan omitted..." is still a fragment standing on its own. Swapping position doesn't cure the error. Option B attempts a comma splice: it joins two independent clauses with only a comma, which is grammatically incorrect — and technically, the because clause isn't even set up as a proper independent clause here anyway. Option D places a semicolon before because, which is almost always wrong. A semicolon must connect two independent clauses; a because clause is dependent, so it cannot follow a semicolon. As a quick rule of thumb: because should glue directly to its main clause with no separating punctuation. If you ever see a semicolon before because, treat it as a red flag — it's virtually always incorrect.

Question 7

An editor wants to revise the fragment below so that the dependent clause serves as the subject of a complete sentence.

What the auditor found after reconciling the two sets of accounts.

Which revision accomplishes this goal?

  1. What the auditor found after reconciling the two sets of accounts; the discrepancies formed a consistent pattern.
  2. What the auditor found after reconciling the two sets of accounts. The auditor then documented a consistent pattern.
  3. Because what the auditor found after reconciling the two sets of accounts revealed a consistent pattern.
  4. What the auditor found after reconciling the two sets of accounts was a consistent pattern of discrepancies. (correct answer)
Explanation: When a question asks you to make a dependent clause function as the subject of a complete sentence, you need to understand two things: what a dependent clause is, and what a subject must do grammatically. A dependent clause like "What the auditor found after reconciling the two sets of accounts" is a noun clause — it acts like a noun and can serve as a subject, but only if the sentence also contains a main verb and a complete predicate. Option D achieves exactly this. The noun clause "What the auditor found..." becomes the subject, and "was a consistent pattern of discrepancies" serves as the predicate with a clear main verb ("was"). The sentence is now complete and grammatically whole — subject + verb + complement. The other options each fail in a specific way. Option A uses a semicolon to join the original fragment with an independent clause, but a semicolon cannot repair a fragment — it can only join two complete independent clauses, which the first part still is not. Option B simply adds a new sentence after the fragment, leaving the original clause as a standalone fragment rather than integrating it as a subject. Option C compounds the problem by adding "Because" before the noun clause, which converts it into an adverbial clause, making the entire construction an even longer fragment — nothing can serve as the sentence's subject because there is still no main clause. A useful strategy: when you see a noun clause (often beginning with what, that, or how), ask yourself — does this sentence have a main verb that belongs to that clause as its subject? If not, it's still a fragment.

Question 8

An editor wants to revise the fragment below so that the opening dependent clause is attached to an independent clause while the quoted announcement is retained.

When the chair announced, "The vote is final," several observers who had expected further debate.

Which revision accomplishes this goal?

  1. When the chair announced, "The vote is final," several observers who had expected further debate left the chamber. (correct answer)
  2. When the chair announced, "The vote is final." Several observers who had expected further debate then left the chamber.
  3. The chair's announcement that "the vote is final," which caused several observers who had expected further debate to leave the chamber.
  4. When the chair announced, "The vote is final"; several observers who had expected further debate left the chamber.
Explanation: When you encounter a sentence fragment question, your first task is to identify what's missing. A complete sentence needs an independent clause — a subject plus a verb that can stand alone. A dependent clause (one beginning with "when," "because," "although," etc.) cannot stand alone; it must attach to an independent clause. The original sentence has two problems layered together: the opening "When the chair announced..." is a dependent clause, and "several observers who had expected further debate" is just a noun phrase with no main verb. The entire sentence lacks an action that completes the thought. The fix is to attach the dependent clause to a true independent clause while keeping the quoted announcement intact. Choice A accomplishes exactly this. Adding "left the chamber" gives the noun phrase "several observers who had expected further debate" a real verb, creating an independent clause. Now the dependent clause has something to attach to, and the quote is preserved — the sentence is complete. Choice B breaks the sentence at the wrong place, putting a period after the quote and separating the dependent clause from the rest, which creates a new fragment: "When the chair announced, 'The vote is final.'" is still a dependent clause masquerading as a sentence. Choice C eliminates the original dependent clause entirely and replaces it with a relative clause ("which caused..."), producing yet another fragment — there is no independent clause with a main verb anywhere in the sentence. Choice D uses a semicolon incorrectly. A semicolon must join two independent clauses, but "When the chair announced, 'The vote is final'" is dependent, not independent. A useful rule of thumb: if a clause starts with a subordinating conjunction like "when," it cannot be punctuated as a complete sentence or joined by a semicolon — it must attach to an independent clause.

Question 9

Which sentence is complete and correctly attaches every dependent clause to an independent clause?

  1. Only after the engineers had repeated the pressure test that previously produced inconsistent readings.
  2. The modification that the engineers approved after repeating the pressure test with calibrated equipment.
  3. The engineers approved the modification only after they had repeated the pressure test with calibrated equipment. (correct answer)
  4. Although the engineers approved the modification after they had repeated the pressure test with calibrated equipment.
Explanation: When a question asks you to identify a "complete sentence," you're really being tested on the difference between a complete sentence (independent clause) and a sentence fragment (a clause that can't stand alone). Every complete sentence needs a subject, a verb, and a complete thought — and any dependent clause must be anchored to one. Choice C is the correct answer because it contains a fully realized independent clause: "The engineers approved the modification" has a clear subject and verb and expresses a complete thought. The dependent clause "only after they had repeated the pressure test with calibrated equipment" is properly attached to it, adding context without stranding the reader. Here's where the other choices go wrong. Choice A begins with "Only after the engineers had repeated the pressure test..." — that subordinating construction (only after) signals a dependent clause, but nothing follows to complete the thought. It's a fragment. Choice B opens with "The modification that the engineers approved..." — the relative clause "that the engineers approved" interrupts and suspends the noun phrase, and no main verb ever arrives to complete the sentence. It's also a fragment. Choice D starts with "Although," a subordinating conjunction that immediately signals a dependent clause. The rest of the sentence never breaks free into an independent clause, leaving it — once again — a fragment. The pattern to watch: subordinating conjunctions (although, because, after, only after, since, while) and relative pronouns (that, which, who) create dependent clauses that need a main clause to be complete. If you spot one at the start of a sentence and never find an independent clause attached, you've found a fragment.

Question 10

Which option is punctuated as a complete sentence, despite containing both a conditional clause and an embedded relative clause?

  1. Unless the replacement valve, which the supplier shipped yesterday, arrives before noon; the maintenance crew will isolate the western line.
  2. Unless the replacement valve, which the supplier shipped yesterday, arrives before noon, the maintenance crew will isolate the western line. (correct answer)
  3. Unless the replacement valve, which the supplier shipped yesterday, arrives. Before noon, the maintenance crew will isolate the western line.
  4. The replacement valve, which the supplier shipped yesterday, unless it arrives before noon and the maintenance crew isolates the western line.
Explanation: When a sentence contains multiple clause types layered together, your job is to check that the full structure still delivers one complete independent clause with correct punctuation connecting everything. Here, the sentence has three components working together: a conditional (adverbial) clause beginning with "Unless," a relative clause ("which the supplier shipped yesterday") embedded inside it as a parenthetical, and a main independent clause ("the maintenance crew will isolate the western line"). For the sentence to be complete, these pieces must be joined correctly — and only B achieves this. The conditional clause ends after "before noon," and a comma separates it from the main clause, which is the standard way to punctuate a fronted adverbial clause. The embedded relative clause, set off by commas on both sides, doesn't interrupt the grammatical flow at all. A is tempting because it looks nearly identical to B, but the semicolon before "the maintenance crew" is the fatal flaw. Semicolons join two independent clauses — "unless...arrives before noon" is a dependent clause, so a semicolon here creates a punctuation error, not a sentence boundary. C breaks the conditional clause mid-thought with a period after "arrives," splitting a dependent clause from its main clause entirely. "Unless the replacement valve...arrives" cannot stand alone as a sentence — it's a fragment. D never delivers an independent clause at all. It strings together noun phrases and clause fragments without a complete predicate governing the whole structure, leaving you with a long, sophisticated-looking fragment. Your strategy: always strip away the embedded clauses mentally and check whether the skeleton — conditional clause + main clause — is properly connected. A comma after a fronted dependent clause, never a semicolon.