Conjunction Worksheets - Free Printable

Explanation:
We are given a worksheet about using the three most common conjunctions: and, but, and or. Each sentence has a blank where one of these words should go to make the sentence logical and grammatically correct.

Let’s go through each sentence one by one and decide which conjunction fits best.

1. *Ashley has a peanut butter ______ jelly sandwich in her lunch box.*
→ A peanut butter and jelly sandwich is a well-known phrase. “And” connects two things that go together. ✔
✔️ and

2. *Lindsay ______ Jennifer are sisters.*
→ This joins two names as subjects. We use “and” to combine two people doing the same thing.
✔️ and

3. *Sean wanted to learn to play the guitar, ______ his mother wanted him to learn piano.*
→ There’s a contrast: Sean wants guitar, mom wants piano. So we need but (shows opposite ideas).
✔️ but

4. *Greg studied for his spelling test, ______ he still didn’t get an A.*
→ He studied, yet still failed — that’s a contrast. Use but.
✔️ but

5. *Would you rather eat a hot dog ______ a hamburger for dinner?*
→ “Would you rather… ___ …?” asks for a choice between two options. That’s or.
✔️ or

6. *When I grow up, I want to be an electrician ______ a plumber.*
→ Again, this is listing two possible jobs — a choice or combination. Since it says “an electrician ___ a plumber”, and it's about future aspiration (not necessarily exclusive), but in standard usage with “want to be”, if only one is chosen, we use or. However, sometimes people say “and” if they mean both — but being both at once is unlikely. The safer, more common choice here is or, because it's a typical “either/or” career question.
✔️ or

7. *Georgia was going to clean the house, ______ she’s too tired.*
→ She *was going to*, but now she isn’t — contrast again. Use but.
✔️ but

8. *The grass is very long ______ I have to mow it.*
→ The long grass is the *reason* she must mow — but note: “and” can show cause-effect in simple sentences like this (especially in early grades). “But” would imply contradiction, which isn’t the case. “Or” doesn’t fit. So: *The grass is very long and I have to mow it.* That’s acceptable and common for young learners.
✔️ and

9. *Which is your favorite holiday, Halloween ______ Thanksgiving?*
→ Asking to choose between two holidays → use or.
✔️ or

10. *We earned twenty-two dollars selling lemonade ______ cookies.*
→ They sold two things: lemonade and cookies. “And” joins the two items sold.
✔️ and

Now let’s list all answers in order:

1. and
2. and
3. but
4. but
5. or
6. or
7. but
8. and
9. or
10. and

Double-check #6: Some might argue “and” if the person wants to do both jobs — but the sentence says “I want to be an electrician ___ a plumber”, and in real life, those are separate careers; the natural phrasing in elementary worksheets is or for choices. Also, the instruction says “choose the best conjunction”, and “or” is standard for alternatives in questions/choices.

All others are solid.

Final Answer:
and, and, but, but, or, or, but, and, or, and