4th Grade Writing Quiz: Fix Fragments And Run Ons

What this quiz covers

This quiz focuses on Fix Fragments And Run Ons, giving you a quick way to practice the rules, question types, and explanations that matter most for 4th Grade Writing.

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.

Question 1

1. Because Yuki read a book about horses.
2. Yuki read a book she liked it a lot.
3. Yuki read a book and wrote a summary. (correct answer)
4. Wrote a summary about the book she read.

Explanation: "Yuki read a book and wrote a summary." is a complete sentence. It has a subject (Yuki) and tells two things she did, and it expresses a full thought all by itself. "Because Yuki read a book about horses." is a fragment: the word "because" makes you expect more, but the idea never finishes. "Yuki read a book she liked it a lot." is a run-on, because it jams two complete thoughts together with no period or connecting word between them. "Wrote a summary about the book she read." is missing a subject: it tells what was done, but never says who did it, so it is also a fragment.

Question 2

1. Complete sentence
2. Run-on
3. Fragment (correct answer)
4. Comma splice

Explanation: This question tests CCSS.L.4.1.f: producing complete sentences and recognizing and correcting inappropriate fragments and run-ons. Students must identify complete sentences (subject + predicate + complete thought) versus fragments (incomplete) and run-ons (two sentences incorrectly joined). A complete sentence has three parts: a SUBJECT (who/what it's about), a PREDICATE (what the subject does/is - includes a verb), and a COMPLETE THOUGHT (makes sense alone). A FRAGMENT is missing one of these parts - dependent clause fragments start with words like 'when,' 'because,' or 'if' but don't complete the thought. In this example, 'When Maya got home' is a fragment. It is a dependent clause that doesn't express a complete thought - we don't know what happened when Maya got home. Choice C is correct because it correctly identifies this as a fragment - the dependent clause needs a main clause to complete the thought, like 'When Maya got home, she did her homework.' Choice A represents a common error where students think any group of words with subject and verb is complete, but dependent clauses starting with 'when,' 'because,' 'if,' etc. create incomplete thoughts. To help students: Teach that dependent words (when, because, if, although, since) make incomplete thoughts that need main clauses. Practice completing dependent clause fragments by asking 'What happened?' - 'When Maya got home, [what happened?].' Common fragments: Dependent clause alone (starts with because/when/if but doesn't tell what happened). Watch for: not recognizing dependent words create fragments, thinking any clause with subject and verb is complete, missing that reader is left asking 'then what?'

Question 3

1. Run‑on
2. Complete sentence
3. Fragment (correct answer)
4. Comma splice

Explanation: This question tests CCSS.L.4.1.f: producing complete sentences and recognizing and correcting inappropriate fragments and run-ons. Students must identify complete sentences (subject + predicate + complete thought) versus fragments (incomplete) and run-ons (two sentences incorrectly joined). A complete sentence has three parts: a SUBJECT (who/what it's about), a PREDICATE (what the subject does/is - includes a verb), and a COMPLETE THOUGHT (makes sense alone). A FRAGMENT is missing one of these parts - dependent clause fragments start with words like because, when, if, although but don't tell us what happened. In this example, 'Because it was windy at recess' is a fragment. It is a dependent clause that doesn't express a complete thought - the word 'because' makes us expect to hear what happened as a result of the wind, but that information is missing. Choice C is correct because it correctly identifies this as a fragment - specifically a dependent clause fragment that needs a main clause to complete the thought. Choice B represents a common error where students think any clause with subject and verb is complete, which occurs when students don't recognize that dependent words (because, when, if, although) make thoughts incomplete. 'Because it was windy at recess' has a subject (it) and verb (was), but the word 'because' makes it dependent - it needs completion like 'Because it was windy at recess, we played inside.' To help students: Teach that dependent words (because, when, if, although, since) create incomplete thoughts that need main clauses. Practice completing dependent clauses - 'Because it rained...' needs 'we stayed inside' or similar. Common fragments include dependent clause alone (starts with because/when/if but doesn't tell what happened). Watch for: not recognizing dependent words make incomplete thoughts, thinking any group with subject+verb is complete, and confusing dependent clauses that sound natural in speech with complete sentences in writing.

Question 4

1. A subject (who or what) (correct answer)
2. A comma
3. A joining word like and
4. Another complete sentence

Explanation: This question tests CCSS.L.4.1.f: producing complete sentences and recognizing and correcting inappropriate fragments and run-ons. Students must identify complete sentences (subject + predicate + complete thought) versus fragments (incomplete). A complete sentence has three parts: a SUBJECT (who/what it's about), a PREDICATE (what the subject does/is - includes a verb), and a COMPLETE THOUGHT (makes sense alone). A FRAGMENT is missing one of these parts - common types include missing subject ('Ran to school' - who ran?), missing predicate ('The big dog' - what about the dog?), or dependent clause alone. In this fragment, 'Is my favorite game' is missing a subject - we don't know what is the favorite game. Choice A is correct because it identifies that a subject (who or what) is missing from this fragment. The fragment has a predicate 'is my favorite game' but no subject to tell us what thing is the favorite game. Choice B represents a common misconception where students think fragments need punctuation fixes, which occurs when students confuse fragment problems with punctuation problems. Adding a comma won't help 'Is my favorite game' - it needs a subject like 'Chess is my favorite game' or 'Soccer is my favorite game.' Fragments are fixed by adding missing parts (subject, predicate, or completion), not by adding punctuation. To help students: Teach the 'complete sentence test' - (1) Find subject (who/what it's about), (2) Find predicate (what happens - needs verb), (3) Ask 'Does it make sense alone?' For this fragment, step 1 fails - no subject found. Common fragments include missing subject ('Went to school' - who went?), and these often start with a verb. Watch for: thinking punctuation fixes fragments, not recognizing when subject is missing especially when sentence starts with verb, and confusing different types of sentence errors (fragments need missing parts, not punctuation).

Question 5

1. After lunch, quickly ran to the playground.
2. Jamal ran to the playground after lunch. (correct answer)
3. Because Jamal ran to the playground after lunch.
4. When Jamal ran to the playground after lunch.

Explanation: The fragment is missing a subject, so we need to know who ran. Adding the name Jamal gives us both a subject and a verb, making a complete sentence that can stand on its own. One choice just reorders the words and adds "quickly," but it still never tells us who ran, so it stays a fragment. Another choice starts with "Because," which turns it into a dependent clause that leaves the reader waiting for the rest of the idea. The last choice starts with "When," which does the same thing: it sounds unfinished and cannot stand alone as a sentence. Only the choice naming Jamal fixes the fragment completely.

Question 6

1. The bell rang, and we lined up.
2. The bell rang. We lined up. (correct answer)
3. Because the bell rang, we lined up.
4. The bell rang, we lined up quickly.

Explanation: The question asks you to make two complete sentences. "The bell rang. We lined up." does this: each part is a full sentence with its own end mark. "The bell rang, and we lined up." joins the two ideas into one sentence using a comma and the word "and," so it is only one sentence, not two. "Because the bell rang, we lined up." also makes just one sentence; the word "because" ties the ideas together into a single complex sentence. "The bell rang, we lined up quickly." uses only a comma to connect two complete thoughts, which is a comma splice and still counts as one run-on sentence, not two separate ones. Only breaking the ideas apart with a period gives you two complete sentences, so "The bell rang. We lined up." is the best answer.

Question 7

1. It is a complete sentence that shares one finished thought.
2. It is a run-on that joins too many thoughts together.
3. It is a fragment that does not finish one whole thought. (correct answer)
4. It is a complex sentence that adds a full main idea.

Explanation: The group of words "After the game ended" is a fragment because the word "After" makes you expect more, and the thought is never finished. A fragment is a piece of a sentence that cannot stand on its own. It is not a complete sentence, because a complete sentence must share one whole, finished thought, and this one leaves you waiting to hear what happened after the game ended. It is not a run-on, because a run-on has too many complete thoughts crammed together, while this group has too few. It is not a complex sentence, because a complex sentence needs a full main idea added to the extra part, and here the main idea is missing.

Question 8

1. Ran to the library after school.
2. Because Jamal was early.
3. The new teacher in our class.
4. Jamal ran to the library after school. (correct answer)

Explanation: This question tests CCSS.L.4.1.f: producing complete sentences and recognizing and correcting inappropriate fragments and run-ons. Students must identify complete sentences (subject + predicate + complete thought) versus fragments (incomplete) and run-ons (two sentences incorrectly joined). A complete sentence has three parts: a SUBJECT (who/what it's about), a PREDICATE (what the subject does/is - includes a verb), and a COMPLETE THOUGHT (makes sense alone). A FRAGMENT is missing one of these parts - common types include missing subject ('Ran to school' - who ran?), missing predicate ('The big dog' - what about the dog?), or dependent clause alone ('Because it rained' - what happened?). A RUN-ON is two complete sentences incorrectly joined together - either with just a comma (comma splice: 'I ran, she walked') or with no punctuation (fused sentence: 'I ran she walked'). In this example, the question asks to identify which option is a complete sentence with both subject and predicate. Choice D 'Jamal ran to the library after school' is a complete sentence. It has a subject 'Jamal', predicate 'ran', and expresses a complete thought. Choice A is incorrect because it is a fragment missing a subject - we don't know who ran. To help students: Teach the 'complete sentence test' - (1) Find subject (who/what it's about), (2) Find predicate (what happens - needs verb), (3) Ask 'Does it make sense alone?' If missing any part = fragment. For run-ons, teach to read slowly and listen for two complete thoughts running together - if yes, need period or comma+conjunction (and, but, so, or) to join. Practice identifying subjects and predicates in sentences. Common fragments: Missing subject ('Went to school' - who went?), Missing predicate ('The small bird' - what about it?), Dependent clause alone (starts with because/when/if but doesn't tell what happened). Common run-ons: Comma splice (comma alone between sentences - need period or add conjunction), Fused sentence (no punctuation between sentences). Watch for: thinking 'The big brown dog' is complete (missing predicate/verb), thinking any long group of words is complete sentence, using comma alone to join sentences (need comma + conjunction like 'and'), not recognizing dependent words (because, when, if, although) make incomplete thoughts that need main clause. Teach correction strategies: Fragments - add what's missing; Run-ons - separate with period OR join with comma+conjunction OR use dependent word.

Question 9

1. Complete sentence
2. Fragment (correct answer)
3. Run‑on
4. Comma splice

Explanation: This question tests CCSS.L.4.1.f: producing complete sentences and recognizing and correcting inappropriate fragments and run-ons. Students must identify complete sentences (subject + predicate + complete thought) versus fragments (incomplete) and run-ons (two sentences incorrectly joined). A complete sentence has three parts: a SUBJECT (who/what it's about), a PREDICATE (what the subject does/is - includes a verb), and a COMPLETE THOUGHT (makes sense alone). A FRAGMENT is missing one of these parts - common types include missing subject ('Ran to school' - who ran?), missing predicate ('The big dog' - what about the dog?), or dependent clause alone ('Because it rained' - what happened?). A RUN-ON is two complete sentences incorrectly joined together - either with just a comma (comma splice: 'I ran, she walked') or with no punctuation (fused sentence: 'I ran she walked'). In this example, 'Because the bus was late' is a fragment. It is missing completion - the dependent clause starting with 'because' doesn't tell us what happened. Choice B is correct because it correctly identifies this as a fragment because it's a dependent clause alone. Choice A represents a wrong identification, which occurs when students think dependent clauses are complete. To help students: Teach the 'complete sentence test' - (1) Find subject (who/what it's about), (2) Find predicate (what happens - needs verb), (3) Ask 'Does it make sense alone?' If missing any part = fragment. For run-ons, teach to read slowly and listen for two complete thoughts running together - if yes, need period or comma+conjunction (and, but, so, or) to join. Practice identifying subjects and predicates in sentences. Common fragments: Missing subject ('Went to school' - who went?), Missing predicate ('The small bird' - what about it?), Dependent clause alone (starts with because/when/if but doesn't tell what happened). Common run-ons: Comma splice (comma alone between sentences - need period or add conjunction), Fused sentence (no punctuation between sentences). Watch for: thinking 'The big brown dog' is complete (missing predicate/verb), thinking any long group of words is complete sentence, using comma alone to join sentences (need comma + conjunction like 'and'), not recognizing dependent words (because, when, if, although) make incomplete thoughts that need main clause. Teach correction strategies: Fragments - add what's missing; Run-ons - separate with period OR join with comma+conjunction OR use dependent word.

Question 10

1. A fragment, because it is missing a subject or a verb
2. A run-on, because it joins two complete thoughts without punctuation
3. A complete sentence, because it has a subject and a verb and shows a full thought (correct answer)
4. A command, because it tells someone to go and do something

Explanation: This is a complete sentence. It has a subject, “Amir,” and a verb, “practiced,” and it shares one full thought that can stand on its own. The choice calling it a fragment is wrong because this sentence is not missing a subject or a verb—it has both. The run-on choice is wrong because a run-on jams two complete thoughts together with no correct punctuation, but here there is only one thought, correctly ended with a period. The command choice is wrong because a command tells someone to do something (“Practice the song.”); this sentence simply reports what Amir did. Since the sentence is not missing parts, not two thoughts crammed together, and not giving an order, it is a complete sentence.

Question 11

1. The tall tree in our yard.
2. The tall tree in our yard, it gives shade.
3. The tall tree in our yard gives shade. (correct answer)
4. Because the tall tree in our yard gives shade.

Explanation: This question tests CCSS.L.4.1.f: producing complete sentences and recognizing and correcting inappropriate fragments and run-ons. Students must identify complete sentences (subject + predicate + complete thought) versus fragments (incomplete). A complete sentence has three parts: a SUBJECT (who/what it's about), a PREDICATE (what the subject does/is - includes a verb), and a COMPLETE THOUGHT (makes sense alone). A FRAGMENT is missing one of these parts - common types include missing predicate where we have a subject but no verb/action. In this fragment, 'The tall tree in our yard' is missing a predicate - we have a subject 'The tall tree' with descriptive details 'in our yard,' but we don't know what the tree does or is (no verb). Choice C is correct because it adds the missing predicate 'gives shade' to create 'The tall tree in our yard gives shade,' which now has subject (tree), predicate (gives shade), and complete thought. Choice B represents a comma splice error, which occurs when students try to fix fragments by adding information incorrectly. 'The tall tree in our yard, it gives shade' joins two complete thoughts with just a comma - 'The tall tree in our yard' is still a fragment, and 'it gives shade' is a complete sentence, creating an incorrect combination. The correct fix is to make one complete sentence, not join a fragment to a sentence. To help students: Teach the 'complete sentence test' focusing on finding the verb - what does the subject DO or what IS it? Practice identifying predicates: circle subject, underline verb/predicate. Common fragments include missing predicate ('The small bird' - what about it?) which students miss because the phrase has good description. Watch for: thinking 'The big brown dog' is complete (missing predicate/verb), trying to fix fragments by adding comma and new sentence instead of completing the original thought, and not recognizing that every complete sentence must have a verb.

Question 12

1. I finished my homework I watched TV.
2. I finished my homework. I watched TV. (correct answer)
3. I finished my homework, watched TV.
4. Because I finished my homework.

Explanation: The original sentence joins two complete ideas with only a comma, which is a comma splice. Splitting it into two separate sentences fixes the error correctly. Removing the comma without adding end punctuation just creates a run-on sentence. Dropping the subject before watched creates an incomplete idea, and turning the first part into a because clause loses the second idea entirely.

Question 13

1. Carlos rode his bike to the park after school.
2. After school, Carlos rode his fast red bike.
3. Carlos rode his bike he wore a blue helmet. (correct answer)
4. Carlos and Amir played basketball in the yard.

Explanation: The correct answer is "Carlos rode his bike he wore a blue helmet." This is a run-on because it jams two complete thoughts together with no punctuation between them. "Carlos rode his bike" is one whole sentence, and "he wore a blue helmet" is another whole sentence. You could fix it with a period ("Carlos rode his bike. He wore a blue helmet.") or with a comma and a joining word ("Carlos rode his bike, and he wore a blue helmet."). "Carlos rode his bike to the park after school" is not a run-on. It is one complete thought, just with extra details added on. A long sentence is not automatically a run-on. "After school, Carlos rode his fast red bike" is also one complete sentence. Starting with an extra part like "After school" does not make two thoughts, so it is fine. "Carlos and Amir played basketball in the yard" has two names doing one action, but it is still only one complete thought, so it is not a run-on. Read each choice slowly and listen for two separate ideas crashing together with nothing between them.

Question 14

1. A predicate (what happens) (correct answer)
2. A subject (who or what)
3. A second sentence (another idea)
4. A comma and joining word (to connect)

Explanation: A complete sentence needs a subject (who or what) and a predicate (what happens). “My new soccer ball” already names a subject, but it never tells what the ball does or is, so it is a fragment. Adding a predicate fixes it, like “My new soccer ball rolled away” or “My new soccer ball is blue.” The choice about needing a subject is wrong because the sentence already has one — the soccer ball. The choice about adding a second sentence is wrong because you don’t need another idea; you need to finish this one. The choice about a comma and joining word is wrong because those connect two complete sentences, and here you only have one unfinished part. So the missing piece is a predicate that tells what happens.

Question 15

1. Maya drew a cat Marcus colored it.
2. Maya drew a cat. Marcus colored it. (correct answer)
3. Maya drew a cat, Marcus colored it.
4. Because Maya drew a cat, Marcus colored it.

Explanation: This question tests CCSS.L.4.1.f: producing complete sentences and recognizing and correcting inappropriate fragments and run-ons. Students must identify complete sentences (subject + predicate + complete thought) versus fragments (incomplete) and run-ons (two sentences incorrectly joined). A RUN-ON is two complete sentences incorrectly joined together - a comma splice uses just a comma between complete sentences, which is incorrect. In this example, 'Maya drew a cat, Marcus colored it' is a comma splice run-on. Two complete sentences ('Maya drew a cat' and 'Marcus colored it') are joined with only a comma. Choice B is correct because it properly separates the two sentences with a period: 'Maya drew a cat. Marcus colored it.' Choice C represents the original comma splice error, which occurs when students think a comma alone can join two complete sentences. A comma by itself cannot join two complete sentences - you need either a period to separate them or a comma plus a conjunction (and, but, so, or). Choice D also corrects the run-on by making the first part dependent with 'Because,' creating one complex sentence. To help students: Teach to read slowly and listen for two complete thoughts - if joined by only a comma, it's a comma splice run-on. For run-ons, teach three correction strategies: separate with period, join with comma+conjunction, or use dependent word to make one part dependent. Common run-ons include comma splice (comma alone between sentences). Watch for: using comma alone to join sentences (need comma + conjunction like 'and'), thinking any sentence with a comma between clauses is correct, and not recognizing that two subject-predicate combinations usually mean two sentences.

Question 16

1. "Because Jamal was late for the class."
2. "Ran quickly to the crowded bus stop."
3. "The big red backpack by the door."
4. "Jamal hurried to his class." (correct answer)

Explanation: The correct answer is "Jamal hurried to his class." It tells who the sentence is about (Jamal), tells what he did (hurried to his class), and makes complete sense all by itself. That means it has both a subject and a predicate. "Because Jamal was late for the class" is tricky because it does have a subject and a verb. But the word "Because" leaves you waiting to find out what happened, so it is not a complete thought yet. "Ran quickly to the crowded bus stop" tells what happened, but it never says who ran. With no subject, it is a fragment. "The big red backpack by the door" names a thing, but it never tells you what the backpack does or is. With no predicate, it is a fragment too. To check any sentence: find who or what it is about, find what happens (the verb), then ask, "Does this make sense on its own?" Only "Jamal hurried to his class" passes all three tests.

Question 17

1. Because Maya used bright colors in her painting.
2. Maya painted a sunset during art class. (correct answer)
3. Painted a bright sunset during art class.
4. Maya painted a sunset she showed it to her teacher.

Explanation: The correct answer is “Maya painted a sunset during art class.” It has a subject (Maya), tells what she did (painted a sunset during art class), and makes complete sense on its own, so it is a complete sentence. “Because Maya used bright colors in her painting” is a fragment: the word “because” leaves you waiting to hear what happened, so the thought is not finished. “Painted a bright sunset during art class” is also a fragment because it is missing a subject—you cannot tell who painted. “Maya painted a sunset she showed it to her teacher” is a run-on: it jams two complete sentences together without the right punctuation. To test any sentence, find the subject, find the verb, and ask, “Does this make sense by itself?” Only the correct choice passes all three checks.

Question 18

1. Yuki packed her lunch in a bright blue lunch bag.
2. The noisy school cafeteria that is right next to the gym.
3. Because it was so cold and windy outside during recess.
4. Yuki packed her lunch she ate it outside at recess. (correct answer)

Explanation: The run-on is "Yuki packed her lunch she ate it outside at recess." It jams two complete sentences together with no period or joining word. You could fix it by adding a period after "lunch" or a word like "and." The sentence about packing lunch in a bright blue bag is already complete and correctly punctuated, so it is not a run-on. The choice about the noisy school cafeteria next to the gym is a fragment: it names something but has no action word telling what happened, so it is not a complete sentence at all. The choice starting with "Because it was so cold and windy" is also a fragment, because "Because" leaves the idea unfinished and you are left waiting to hear what happened. Only one choice has two full sentences run together, and that is the run-on you need to fix.

Question 19

1. Fragment, because it is missing a subject or a verb
2. Run-on, because two complete thoughts are joined with only a comma (correct answer)
3. Complete sentence, because the comma correctly connects the two parts
4. Compound word, because two small words are joined into one longer word

Explanation: This sentence has two complete thoughts: “Emma likes art” and “she paints after dinner.” Each one has its own subject and verb, so they are full ideas. When you join two complete thoughts with only a comma, you make a run-on called a comma splice, so that is the best answer. It is not a fragment, because a fragment is missing a subject or a verb, and both parts here have both. It is not a complete sentence, because a comma alone cannot connect two complete thoughts—you need a period, a semicolon, or a joining word like “and.” It is not a compound word, because a compound word joins two small words into one bigger word, like “cupcake,” and that is not what is happening in this sentence.

Question 20

1. Fragment
2. Run-on
3. Complete sentence (correct answer)
4. Comma splice

Explanation: This sentence has a subject, Yuki, and two actions, read and wrote, joined correctly by the word and, so it is a complete sentence with one clear thought. It is not a fragment, because a fragment is missing a subject or a verb, and this one has both. It is not a run-on, because a run-on jams two full sentences together without the right punctuation or joining word, but here the actions are joined properly with and. It is not a comma splice, because a comma splice joins two full sentences using only a comma, and this sentence has no comma joining anything.