Conjunction Worksheets | Free Printables - Free Printable

Let's solve this worksheet step by step. The task is to add appropriate conjunctions to each sentence to make it grammatically correct and meaningful.

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🔹 What are Conjunctions?

Conjunctions are words that connect words, phrases, or clauses. Common ones include:
- Coordinating conjunctions: *and, but, or, nor, for, so, yet*
- Subordinating conjunctions: *because, although, since, when, while, so that, after, before, until, etc.*

We'll use these to complete the sentences.

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✔ Now, let’s go through each sentence:

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1. The teacher read the book slowly ___ they could understand.

- We need a conjunction that shows purpose or reason.
- "So that" fits perfectly: *"so that they could understand."*
- ✔ Answer: so that

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2. The computer was used ___ research projects.

- This is incomplete. It needs a word to show purpose.
- "For" is a preposition, not a conjunction — but we’re supposed to add a conjunction, so maybe there's a typo? Let’s re-express.
- Actually, the sentence might be missing a clause. But if we assume it’s meant to be “used for research projects,” then “for” isn’t a conjunction.
- Wait — perhaps the intended structure is: “The computer was used ___ research projects.” → This sounds like it should be “for” — but again, not a conjunction.
- However, looking at the context, maybe it's asking for a conjunction to join two ideas? But only one idea is given.
- Alternatively, maybe it's expecting a subordinating conjunction like "so that" or "in order that" — but those would require a full clause.

Wait — perhaps the sentence is meant to be:
“The computer was used ___ research projects were done.”

But it's not written that way.

Given the format, it's likely a mistake — but let's suppose it's asking for "for" as in "used for research projects". But "for" is not a conjunction.

Alternatively, maybe the sentence is:
“The computer was used ___ research projects” → but it's missing a clause.

Wait — maybe the original intention was:
“The computer was used so that research projects could be completed.”

But that’s not what’s written.

Given the lack of a second clause, this may be a typo.

But if we assume it's just asking for a preposition (like "for"), but the title says "conjunctions", that doesn't match.

Let’s look at other clues.

Wait — perhaps the sentence is actually:
“The computer was used ___ research projects.” — and we're supposed to fill in "for" — but again, "for" is not a conjunction.

Alternatively, maybe the intended sentence is:
“The computer was used to do research projects” — but that uses an infinitive.

Hmm.

But let's check the next one.

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Wait — perhaps the worksheet has a typo, or we're misunderstanding.

Let’s move on and come back.

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3. After they painted the hung up their artwork ___ that it could dry.

- There's a typo: “the hung up” → should be “they hung up”
- So: “After they painted, they hung up their artwork ___ that it could dry.”
- We need a conjunction showing purpose: so that
- ✔ Answer: so that

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4. Pip trained ___ the Cross Country running race.

- Needs a conjunction? But no second clause.
- “Pip trained ___ the Cross Country running race.” → seems like it should be “for” → “trained for the race.”
- But “for” is not a conjunction.
- Maybe it's “Pip trained ___ he could win the race.” → then “so that” or “in order that”.

But as written, it's incomplete.

Possibility: “Pip trained for the Cross Country running race.” → “for” is a preposition.

But again, not a conjunction.

This suggests the worksheet might have errors.

Wait — perhaps some blanks are meant for prepositions, but the title says conjunctions.

Let’s look at sentence 5.

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5. Her parents ___ swim coach were proud of her.

- “Her parents ___ swim coach” — probably means “Her parents and swim coach” → so and connects two subjects.
- ✔ Answer: and

Yes! That makes sense.

So now we see: some are coordinating conjunctions (and, but, so that), others may be subordinating.

Back to #2.

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2. The computer was used ___ research projects.

- If we interpret it as: “The computer was used for research projects” → “for” is a preposition.
- But we need a conjunction.

Unless it's: “The computer was used so that research projects could be done.” — but that’s not what’s written.

Wait — maybe the sentence is:
“The computer was used ___ research projects were conducted.” → then we’d need so that.

But it’s not written that way.

Perhaps it’s a typo and should be:
“The computer was used for research projects.” — but then “for” isn’t a conjunction.

Alternatively, maybe the blank is meant to be filled with “to” or “in order to” — but those aren’t conjunctions.

Wait — perhaps the intended answer is “so that”, assuming a missing clause.

But let’s look at sentence 9.

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9. The car stopped ___ that the ducks could safely cross the road.

- Clearly: “so that” → “stopped so that the ducks could cross”
- ✔ Answer: so that

So “so that” appears multiple times.

Now, back to #2 — maybe it’s similar?

But “research projects” is a noun phrase, not a clause.

So unless it's: “The computer was used so that research projects could be completed” — but again, not written.

Wait — perhaps the sentence is:
“The computer was used ___ research projects.” — and the blank is meant to be “for”, even though it's not a conjunction.

But the worksheet says conjunctions, so that can't be.

Alternative idea: maybe the sentence is:
“The computer was used and research projects were done.” → then “and” is the conjunction.

But that changes the meaning.

Or: “The computer was used because research projects needed it.” → “because” is a subordinating conjunction.

But again, not written.

Given the pattern, I suspect some sentences may have typos.

Let’s try to fix them based on common usage.

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Let’s list all sentences again with best guesses:

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1. The teacher read the book slowly ___ they could understand.

- Purpose: “so that”
- ✔ Answer: so that

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2. The computer was used ___ research projects.

- This is tricky.
- Possible correction: “The computer was used for research projects.” → but “for” is not a conjunction.
- Or: “The computer was used so that research projects could be completed.” → then “so that” is the answer.
- But since the sentence ends with “projects”, not a clause, maybe it's a typo.
- Another possibility: “The computer was used and research projects were done.” → “and” is a conjunction.
- But that changes the meaning.

Wait — maybe it's: “The computer was used to research projects” — no.

Another idea: “The computer was used in research projects” — again, preposition.

I think the most plausible is that it's meant to be:
“The computer was used for research projects.” — but since “for” isn’t a conjunction, maybe the worksheet is wrong.

But let’s skip and return.

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3. After they painted the hung up their artwork ___ that it could dry.

- Typo: “the hung up” → should be “they hung up”
- So: “After they painted, they hung up their artwork ___ that it could dry.”
- Purpose: “so that”
- ✔ Answer: so that

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4. Pip trained ___ the Cross Country running race.

- Likely: “Pip trained for the Cross Country running race.” → “for” is preposition.
- But if we want a conjunction, maybe: “Pip trained so that he could win the Cross Country running race.” → then “so that”
- But again, sentence is incomplete.

Wait — maybe the blank is for “for”, even though it's not a conjunction.

But the title says conjunctions, so likely not.

Alternatively, maybe it's: “Pip trained and ran the race” — but that’s not what’s written.

Wait — perhaps the sentence is:
“Pip trained ___ the Cross Country running race” — and we need “for”.

But again, not a conjunction.

Maybe the worksheet allows prepositions, but the title says conjunctions.

Let’s move to #5.

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5. Her parents ___ swim coach were proud of her.

- Two subjects: “her parents” and “swim coach”
- Need and to join them
- ✔ Answer: and

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6. They tried their best ___ didn’t win the game.

- Two independent clauses: “They tried their best” and “didn’t win the game”
- Contrast: but
- ✔ Answer: but

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7. The baker put the bread in the oven ___ waited until it was ready.

- Two actions: putting bread in oven, waiting
- Sequence: and
- ✔ Answer: and

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8. Sam baked a cake ___ the school fundraiser.

- Similar to #2
- “Sam baked a cake for the school fundraiser.” → “for” is preposition
- But again, not a conjunction
- Unless: “Sam baked a cake so that the school fundraiser could succeed.” → then “so that”
- But not written.

Wait — maybe it's: “Sam baked a cake and sold it for the fundraiser.” → then “and”

But not written.

Alternatively, “Sam baked a cake for the school fundraiser.” — “for” is not a conjunction.

But if we accept “for” as a possible answer despite not being a conjunction, that might be the intent.

But the title says conjunctions, so likely not.

Wait — another possibility: “Sam baked a cake in order to help the school fundraiser.” → then “in order to” is not a conjunction.

I think the most logical interpretation is that some sentences are missing clauses, and we need to infer.

Let’s look at #9 and #10.

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9. The car stopped ___ that the ducks could safely cross the road.

- Clearly: “so that”
- ✔ Answer: so that

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10. The tiger ___ her cubs lay in the sun.

- Two subjects: “the tiger” and “her cubs”
- Joined by and
- ✔ Answer: and

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Now, going back, let’s try to find a consistent pattern.

From the answers we have:
- #1: so that
- #3: so that
- #5: and
- #6: but
- #7: and
- #9: so that
- #10: and

So “and”, “but”, “so that” are recurring.

Now, for #2: “The computer was used ___ research projects.”

If we assume it's meant to be: “The computer was used for research projects.” — but “for” is not a conjunction.

Alternatively, maybe it's: “The computer was used and research projects were done.” → “and”

But that changes meaning.

Another idea: “The computer was used so that research projects could be done.” → then “so that” — but the sentence ends with “projects”, not a clause.

Wait — unless “research projects” is shorthand for “research projects could be completed” — but that’s not valid.

Alternatively, maybe the sentence is:
“The computer was used to research projects” — no.

I think the most likely explanation is that #2 is meant to be:
“The computer was used for research projects.” — and “for” is accepted despite not being a conjunction.

But that contradicts the title.

Alternatively, perhaps the blank is for “to” as in “used to research” — but that’s incorrect.

Wait — “used to do something” — so “used to” is a phrasal verb.

But not a conjunction.

Another thought: maybe the sentence is:
“The computer was used and research projects were done.” — then “and” is the conjunction.

But again, not matching.

Let’s consider that #2 might be a typo, and it should be:
“The computer was used so that research projects could be completed.” — then “so that” is the answer.

Similarly, #4: “Pip trained ___ the Cross Country running race.” — maybe “Pip trained so that he could win the race.” — then “so that”

And #8: “Sam baked a cake ___ the school fundraiser.” — maybe “so that” or “for” — but again, not a conjunction.

Wait — unless “for” is considered here, but it’s not a conjunction.

But let’s look at #4 again.

4. Pip trained ___ the Cross Country running race.

- “Pip trained for the race” — “for” is preposition
- “Pip trained in order to run the race” — “in order to” is not a conjunction
- “Pip trained so that he could run the race” — “so that” is a subordinating conjunction

So if we assume the sentence is incomplete and the blank is for “so that”, but it’s not followed by a clause.

Wait — maybe the sentence is:
“Pip trained ___ the Cross Country running race.” — and the blank is for “for”, but again, not a conjunction.

I think the only way this makes sense is if we accept that some blanks are for prepositions, but the title says conjunctions.

But wait — perhaps the worksheet is using “conjunctions” broadly, including subordinating conjunctions like “so that”, which are often used in purpose clauses.

Let’s re-express the sentences with correct grammar and appropriate conjunctions.

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Final Answers (Best Guesses):

1. The teacher read the book slowly so that they could understand.
→ so that

2. The computer was used for research projects.
→ But “for” is not a conjunction.
Alternative: so that (if implied clause)
But without a clause, hard to justify.

Wait — perhaps the sentence is: “The computer was used and research projects were done.” → then and

But that changes meaning.

Given the pattern, maybe it's meant to be “for”, even though it's not a conjunction.

But let’s assume it's a typo and the intended answer is “so that”, but we can’t confirm.

Alternatively, maybe the sentence is: “The computer was used to research projects” — no.

I think the best fit is: for — but it's not a conjunction.

Perhaps the worksheet has an error.

But let’s check online or standard patterns.

In many worksheets, “used for” is common.

So maybe the answer is for, even though it's not a conjunction.

But the title says “conjunctions”.

This is inconsistent.

Wait — perhaps “for” is listed as a conjunction sometimes? No, it’s a preposition.

So likely, the sentence is missing a clause.

But for now, let’s assume the intended answer is so that, and the sentence is:
“The computer was used so that research projects could be done.” — but it's not written.

So perhaps it’s a typo.

Let’s move to #4.

4. Pip trained for the Cross Country running race.
→ Again, “for” is preposition.

But if we say: “Pip trained so that he could win the race.” — then “so that”

But again, not written.

However, #9 is clearly “so that”, so maybe #2 and #4 are also meant to be “so that”.

But they don’t have clauses.

Alternatively, maybe the blank is for “to” — but “to” is not a conjunction.

Another idea: maybe the sentence is: “The computer was used and research projects were done.” → then and

But that’s not accurate.

Let’s look at #8: “Sam baked a cake ___ the school fundraiser.”

Likely: “for” — again, preposition.

But if it's: “Sam baked a cake so that the fundraiser could succeed.” — then “so that”

So perhaps all of these are meant to be “so that” or “for”, but only “so that” is a conjunction.

Therefore, the only sentences that truly require conjunctions are:

- #1: so that
- #3: so that
- #5: and
- #6: but
- #7: and
- #9: so that
- #10: and

And #2, #4, #8 are likely meant to be filled with prepositions (“for”), but that contradicts the title.

But wait — maybe the worksheet includes coordinating conjunctions like “and”, “but”, and subordinating conjunctions like “so that”.

So “so that” is a conjunction.

For #2: “The computer was used so that research projects could be done.” — but the sentence cuts off.

Unless “research projects” is meant to be a clause.

But “research projects” is a noun phrase.

So unless it's “research projects were done”, it’s not a clause.

Therefore, I think there are typos in the worksheet.

But for the sake of completing it, let’s assume the following:

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Final Answer Key (with corrections):

1. so that
2. for (though not a conjunction; likely intended as “so that” with missing clause)
3. so that
4. for (again, preposition)
5. and
6. but
7. and
8. for
9. so that
10. and

But since the title says “conjunctions”, only #1, #3, #5, #6, #7, #9, #10 are valid.

For #2, #4, #8, the intended answers are likely prepositions, not conjunctions.

But if we must use only conjunctions, then:

- #2: cannot be filled with a conjunction without changing the sentence.
- #4: same
- #8: same

Therefore, the only logical conclusion is that some sentences are miswritten, and the intended answers are:

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✔ Corrected Answers (assuming typical usage):

1. so that
2. for (accepting it as non-conjunction) OR so that (if clause implied)
3. so that
4. for
5. and
6. but
7. and
8. for
9. so that
10. and

But to strictly follow “conjunctions”, only the following are true conjunctions:

- #1: so that
- #3: so that
- #5: and
- #6: but
- #7: and
- #9: so that
- #10: and

For #2, #4, #8, the blank is likely for prepositions, not conjunctions.

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🟩 Final Answer (Best Possible):

1. so that
2. for *(note: not a conjunction; likely error)*
3. so that
4. for *(same issue)*
5. and
6. but
7. and
8. for *(same issue)*
9. so that
10. and

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💡 Explanation:

- “so that” is a subordinating conjunction used to show purpose.
- “and” is a coordinating conjunction used to join similar elements.
- “but” is a coordinating conjunction showing contrast.
- “for” is a preposition, not a conjunction, but commonly used in such contexts.

Recommendation: The worksheet may have a mistake — some blanks should be for prepositions, not conjunctions. But if forced to use conjunctions, then only #1, #3, #5, #6, #7, #9, #10 are valid.

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✔ Final Answer Sheet:

1. so that
2. for
3. so that
4. for
5. and
6. but
7. and
8. for
9. so that
10. and

*(Note: #2, #4, #8 use prepositions; others use conjunctions.)*