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Can You Master Run-on Sentences? Take the Quiz!

Ready for run on sentence practice? Spot and fix errors fast.

Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art illustration for run on sentence quiz on a golden yellow background

Calling all grammar enthusiasts! Dive into our free run on sentence quiz designed to sharpen your writing skills and boost clarity with every sentence. You'll explore the run-on sentence definition in detail, learn how to identify a run on sentence with engaging run-on sentence examples and answers, and gain essential run on sentence practice. This interactive quiz is perfect for anyone wanting to write with confidence and precision. Ready for expert guidance? Check out our fixing a run-on sentence tips, and extend your learning with extra online practice . Whether you're a student or a professional writer, challenge yourself now and conquer those grammatical glitches - take the quiz today!

Which of the following is an example of a run-on sentence?
I love pizza I eat it every day.
I love pizza, and I eat it every day.
I love pizza; I eat it every day.
Because I love pizza, I eat it every day.
This sentence joins two independent clauses without any conjunction or punctuation, creating a run-on. Run-ons occur when clauses are fused without proper connectors, which can confuse readers. Correcting a run-on requires adding a coordinating conjunction, comma, or semicolon. Learn more at Purdue OWL.
Which sentence is correctly punctuated and NOT a run-on?
She went to the store she forgot her wallet.
She went to the store, and she forgot her wallet.
She went to the store she, forgot her wallet.
She went to the store; and she forgot her wallet.
Option B uses a coordinating conjunction 'and' with a comma to join two independent clauses, which is grammatically correct. The other options either lack conjunctions or misuse punctuation, resulting in run-ons or comma splices. Coordinating conjunctions (for, and, nor, but, or, yet, so) joined by commas fix run-ons. See guidelines at Grammarly.
Identify the comma splice in the following options.
He finished his homework, he went to bed.
After he finished his homework, he went to bed.
He finished his homework and then he went to bed.
He finished his homework; then he went to bed.
A comma splice occurs when two independent clauses are joined by only a comma without a coordinating conjunction. Option A shows this error. Correct remedies include adding a conjunction or replacing the comma with a semicolon. For more detail, visit UNC Writing Center.
Which revision corrects the run-on sentence: "They wanted to leave early they missed the bus."?
They wanted to leave early, they missed the bus.
They wanted to leave early; they missed the bus.
They wanted to leave early they, missed the bus.
They wanted to leave early and missed the bus.
Using a semicolon properly connects two independent clauses without a coordinating conjunction, as shown in Option B. Option A is just a comma splice, and Option D changes meaning by making one clause subordinate. Semicolons are ideal for linking closely related clauses. See Purdue OWL on Semicolons.
True or False: A run-on sentence always contains more than two clauses.
True
False
Run-on sentences occur when two independent clauses are improperly joined. They do not require more than two clauses; even two clauses can create a run-on if improperly punctuated. Refer to Grammarly for examples.
Which conjunction correctly fixes this run-on: "She loves painting she does it every weekend."?
She loves painting, so she does it every weekend.
She loves painting she, so does it every weekend.
She loves painting; she does it every weekend.
She loves painting and does it every weekend.
Option A uses a coordinating conjunction 'so' with a comma to join the clauses correctly. Semicolons alone (Option C) are valid but Option A directly answers the conjunction question. Option D omits the subject in the second clause, altering clarity. See Purdue OWL on comma usage.
Identify the sentence that contains a comma splice.
I finished my report, I went out for lunch.
After I finished my report, I went out for lunch.
I finished my report; I went out for lunch.
I finished my report and then went out for lunch.
Option A joins two independent clauses with just a comma, which is the definition of a comma splice. Correct fixes include adding a conjunction or using a semicolon. The other options either subordinate one clause or correctly separate them. For more information, visit UNC Writing Center.
Select the best revision of this run-on: "The sun set the sky turned pink."
The sun set; the sky turned pink.
The sun set the sky, turned pink.
When the sun set the sky turned pink.
The sun set, and the sky turned pink.
Option A correctly uses a semicolon to join two independent clauses. Option D is also correct grammatically but Option A matches the prompt focusing on semicolons. Option C makes the first clause subordinate, changing sentence structure. Learn more at Grammarly on Semicolons.
Which option eliminates the run-on in this sentence: "Tom studied all night, he still failed the test."?
Tom studied all night; he still failed the test.
Tom studied all night and still failed the test.
Tom studied all night, and still failed the test.
Tom studied all night he still failed the test.
The semicolon in Option A correctly separates two independent clauses without a conjunction. Option B turns the second clause into a subordinate phrase but changes nuance. Option C misplaces the comma. Semicolons are ideal for this fix. See Purdue OWL.
True or False: Adding a coordinating conjunction always fixes a run-on sentence.
True
False
While coordinating conjunctions help join clauses, you still need proper punctuation (a comma before the conjunction) to fix a run-on. Simply placing 'and' or 'but' without a comma can create a comma splice. For details, visit Grammarly.
Which of these sentences is a fused sentence (run-on) without punctuation or conjunction?
She opened the door, she saw her friend.
She opened the door she saw her friend.
She opened the door and she saw her friend.
After she opened the door, she saw her friend.
Option B fuses two independent clauses without any conjunction or punctuation, creating a run-on. The other options either use commas with conjunctions or subordinate clauses correctly. Fused sentences confuse readers and should be revised. More at UNC Writing Center.
Choose the best way to combine these clauses without creating a run-on: "The project was due soon. We were not ready."
The project was due soon, we were not ready.
The project was due soon; we were not ready.
Since the project was due soon we were not ready.
The project was due soon we were not ready.
Option B uses a semicolon correctly to join two related independent clauses. Option C subordinates the first clause but lacks a necessary comma after 'soon'. Option A is a comma splice and Option D is a fused sentence. For further reading, see Purdue OWL.
Identify the sentence containing a comma splice among these complex clauses.
Although he was tired, he finished his essay.
He was tired, he finished his essay, he earned praise.
He was tired; however, he finished his essay.
He was tired but he finished his essay.
Option B joins three independent clauses with only commas, creating comma splices. Correct approaches would use semicolons or conjunctions with commas. Option C correctly uses a semicolon and transitional adverb. For guidance, visit Grammarly.
Which punctuation change best corrects this run-on: "We planned our route we left at dawn we reached by noon."
We planned our route; we left at dawn; we reached by noon.
We planned our route, we left at dawn; we reached by noon.
We planned our route we left at dawn, we reached by noon.
We planned our route, and we left at dawn, and we reached by noon.
Option A correctly uses semicolons to separate three independent clauses of equal weight. Option D uses too many conjunctions and commas, which can become cumbersome. Semicolons ensure clarity. More at Purdue OWL.
Select the best rewrite to correct the run-on sentence: "The conference started late everyone was late there was traffic the keynote speaker waited patiently."
The conference started late; everyone was delayed by traffic, yet the keynote speaker waited patiently.
The conference started late everyone was delayed by traffic and the keynote speaker waited patiently.
Because everyone was delayed by traffic the conference started late; the keynote speaker waited patiently.
The conference started late, everyone was delayed by traffic, the keynote speaker waited patiently.
Option A uses a semicolon to join the first two independent clauses and correctly adds a comma plus 'yet' to join the final clause, creating a clear, compound-complex sentence. The other options either fuse clauses or misplace conjunctions. For advanced editing tips, see UNC Writing Center.
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Study Outcomes

  1. Identify Run-On Sentences -

    Recognize and label run-on sentences and comma splices, understanding the core run-on sentence definition to spot errors like a pro.

  2. Differentiate Sentence Errors -

    Distinguish between run-on sentences, comma splices, and properly punctuated sentences for clearer grammar insight.

  3. Correct Faulty Constructions -

    Apply punctuation rules and conjunction strategies to fix run-on sentences and comma splices effectively.

  4. Apply Revision Techniques -

    Use targeted run on sentence practice to rewrite and refine sentences for improved clarity and flow.

  5. Analyze Punctuation Pitfalls -

    Examine sentence structures to pinpoint common punctuation mistakes and prevent future run-on errors.

  6. Reinforce Learning with Examples -

    Review run-on sentence examples and answers to solidify understanding and boost grammar confidence.

Cheat Sheet

  1. Run-On Sentence Definition and Types -

    Understanding a run-on sentence definition is your first step: it occurs when two independent clauses are improperly joined, causing confusion. They appear as fused sentences ("I love pizza I eat it daily.") or comma splices. Purdue OWL advises spotting these to improve clarity.

  2. How to Identify a Run On Sentence -

    Learn to detect run-on sentences by checking for two complete thoughts stuck together without correct punctuation. A quick scan for missing conjunctions or misused commas helps you catch mistakes early. UNC Writing Center suggests marking independent clauses, then ensuring they're properly linked.

  3. Using Coordinating Conjunctions (FANBOYS) -

    Master FANBOYS (for, and, nor, but, or, yet, so) to join clauses correctly: "I studied hard, so I passed the quiz." Cambridge Dictionary notes this method avoids comma splices. Mnemonic trick: recite each word while clapping to embed it in memory.

  4. Mastering Semicolons for Clarity -

    Semicolons serve as a soft bridge between related clauses: "Grammar can be tricky; practice makes perfect." Think of the semicolon as a soft period linking thoughts without a conjunction. Oxford Guide to Style highlights semicolons as a powerful tool against run-on expansions.

  5. Targeted Run On Sentence Practice -

    Consistent run on sentence practice is key: tackle quizzes that offer run-on sentence examples and answers to reinforce learning quickly. Analyze each correction and note why a semicolon, comma + conjunction, or period works best. Spaced repetition with exercises like this run on sentence quiz cements skills.

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