4th Grade ELA 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 ELA.

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. 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 4

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 5

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

Explanation: "When the bell rang" is a fragment because it is a dependent clause that does not express a complete thought on its own. Answer A is wrong because a run-on joins two complete sentences without proper punctuation, which this is not. Answer B is wrong because the clause needs more information to be complete, such as what happened when the bell rang. Answer D is wrong because a simple sentence must be a complete thought, and this clause is not.

Question 6

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

Explanation: The correct answer fixes the run-on by splitting it into two complete sentences with a period. Choice A is wrong because a comma alone cannot join two complete sentences; this is called a comma splice. Choice C is wrong because it starts a dependent clause but leaves out the comma that should follow it. Choice D is wrong because it needs a comma before "and" to correctly join the two complete thoughts.

Question 7

1. Ran to the playground after lunch.
2. He ran to the playground after lunch. (correct answer)
3. Because he ran to the playground after lunch.
4. He ran to the playground after lunch, he played tag.

Explanation: Choice B is correct because it adds a subject, making it a complete sentence. Choice A repeats the original fragment, which still has no subject. Choice C adds "because," turning it into a dependent clause that cannot stand alone. Choice D joins two complete sentences with only a comma, which creates a run-on.

Question 8

1. Sofia finished her book. She told Chen about it. (correct answer)
2. Sofia finished her book she told Chen about it.
3. Sofia finished her book, she told Chen about it.
4. Because Sofia finished her book, she told Chen.

Explanation: The correct answer is A because it splits the run-on into two complete sentences with correct end punctuation. Choice B is wrong because it is the same run-on sentence with no fix at all. Choice C is wrong because it only adds a comma, which creates a comma splice instead of fixing the run-on. Choice D is wrong because it changes the meaning by making the second idea sound like it only happened because of the first.

Question 9

1. Although Emma was tired.
2. Emma was tired, she went to bed early.
3. Went to bed early.
4. Emma was tired, so she went to bed early. (correct answer)

Explanation: A complete sentence needs a full subject and verb without being a fragment or a run-on. The first choice is a fragment because it starts with although and never finishes the thought. The second choice joins two full sentences with only a comma, which is a run-on. The third choice is a fragment with no subject. The fourth choice correctly joins two full sentences using a comma and the word so.

Question 10

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

Explanation: "Maya painted a sunset during art class." has a subject and a complete verb phrase, so it expresses a full, correct thought. Choice A is a fragment that begins with a dependent clause and never finishes the thought, choice C is a fragment missing a main verb, and choice D joins two complete sentences with only a comma, creating a comma splice.

Question 11

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

Explanation: Fragment is correct because "Ran to the bus stop" has no subject telling who ran, so it cannot stand alone as a complete thought. It is not a complete sentence because it is missing a subject. It is not a run-on because a run-on joins too many complete thoughts together, not too few. It is not a compound sentence because it does not join two complete sentences with a conjunction.

Question 12

1. Sofia finished her math, she started reading.
2. Sofia finished her math. She started reading. (correct answer)
3. Because Sofia finished her math, she started reading.
4. Sofia finished her math and started reading she smiled.

Explanation: This choice fixes the run-on by separating the two complete thoughts into two sentences with a period. The first choice only adds a comma, which creates a comma splice instead of fixing the run-on. The third choice adds a cause-and-effect word that was not part of the original meaning. The fourth choice joins the sentences in a confusing way and adds an idea that was not there before.

Question 13

1. The tall tree in our yard, so cool and shady.
2. The tall tree in our yard, it gives us shade.
3. The tall tree in our yard gives us shade. (correct answer)
4. The tall tree in our yard giving us shade.

Explanation: A complete sentence needs a subject and a verb that tells what the subject does. The original words name a tree but never say what it does, so it is a fragment. The tall tree in our yard gives us shade adds the verb 'gives' and finishes the thought, so it is a real sentence. The tall tree in our yard, so cool and shady only adds more description and still has no verb telling what the tree does, so it stays a fragment. The tall tree in our yard, it gives us shade jams a fragment and a full sentence together with just a comma, which is a run-on and not a proper fix. The tall tree in our yard giving us shade uses 'giving' instead of a working verb like 'gives,' so it never becomes a complete sentence. Only one choice has a subject and a real verb that stand on their own.

Question 14

1. Soccer is my favorite game. (correct answer)
2. It is my favorite game, and fun.
3. Because it is my favorite game.
4. Playing is my favorite. Game.

Explanation: The best fix names who or what the sentence is about. "Soccer is my favorite game." adds the missing subject, so now we have a complete thought with a subject and a verb. "It is my favorite game, and fun." starts out complete, but tacking on "and fun" leaves a broken, unfinished piece at the end. "Because it is my favorite game." adds a subject, but the word "because" keeps it hanging like it needs a reason to attach to, so it is still a fragment. "Playing is my favorite. Game." splits the idea into two pieces, and "Game." on its own is not a complete sentence. Only the first choice turns the fragment into one clear, complete sentence.

Question 15

1. A predicate (what the puppy does) (correct answer)
2. A subject (who or what it is about)
3. An adjective (a word that describes)
4. A conjunction (a word that joins)

Explanation: This group of words is a fragment, so it is missing something. The correct answer is a predicate. A complete sentence needs to tell what the subject does or is, and here we never learn what the puppy does. Adding a predicate like "ran across the yard" would finish the thought. Saying it is missing a subject is wrong because "the puppy" already tells who the sentence is about. Saying it is missing an adjective is wrong because "red" already describes the collar, and adjectives do not turn a fragment into a full sentence anyway. Saying it is missing a conjunction is wrong because a conjunction joins words or sentences, and this fragment does not have two parts that need joining. To fix a fragment, add the missing part, like a predicate, so the sentence tells a complete thought.

Question 16

1. After dinner, Keisha read two whole chapters.
2. In the yard, the puppy chased the bouncing ball.
3. Since the rain was so loud on the roof. (correct answer)
4. During cleanup, we put away all our crayons.

Explanation: A complete sentence needs a subject, a verb, and a whole idea that makes sense by itself. "Since the rain was so loud on the roof" leaves you waiting to hear what happened — it starts an idea but never finishes it, so it is a fragment. "After dinner, Keisha read two whole chapters" is complete: Keisha (subject) read (verb), and the thought is finished, so it is not the answer even though it is short. "In the yard, the puppy chased the bouncing ball" is also complete — the puppy chased the ball, a full idea. "During cleanup, we put away all our crayons" tells who (we) did what (put away crayons) and stands on its own. Watch out: starting with an extra phrase like "After dinner" or "In the yard" does not make a sentence a fragment. The real test is whether the idea finishes. Only the rain sentence leaves you hanging.

Question 17

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 18

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 19

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

Explanation: The original sentence is a run-on: two complete thoughts, "The bell rang" and "we lined up," are jammed together with no punctuation. The best fix separates them into two clear sentences with a period: "The bell rang. We lined up." Each part now has its own subject and verb and stands on its own. Using only a comma between the two thoughts is still a run-on, called a comma splice — a comma alone is not strong enough to join two complete sentences. Starting with "Because" makes the sentence an incomplete thought (a fragment); it leaves you waiting to hear what happened because the bell rang. Adding "so" this way keeps the comma error because "so" needs to follow a comma correctly to join two sentences, and even then the extra word "soon" does not repair the punctuation between the two thoughts. To fix run-ons, you can split them with a period, join them with a comma plus a joining word like and, but, or so, or add a word like when or because to one part.

Question 20

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.