please check if I have put the apostrophes in the right places or if I have forgot to put them in certain places in these sentences:

1. My dog's been so sick lately.
2. We've been having lots of fun in science classes.
3. Why's the dog eating from the cats' dish?

4. It's time to was the players' uniforms.

5. My 2 cousins' ipods are cool.

6. The birds' chirping is anoying.

7. It was somebody else's idea to change the plans, not mine.

8. Jade's been swimming since she was 6 months' old.

9. Todd's taking his son's helmet to the game.
10. She has her three daughters' heath to think about.

Thanks :)

All are right, except I believe there is only one cat in number 3 -- so it should be the cat's dish.

Oh thank you:)

You're very welcome.

On number three the cat's dish. It is showing possession.

1. Sentence is correct. The apostrophe is placed before the "s" since it indicates possession of the dog.

2. Sentence is correct. The contraction "We've" is formed by combining "We have" and the apostrophe is correctly placed.

3. The apostrophe in "Why's" is correct, as it is a contraction of "Why is." However, the apostrophe in "cats'" is unnecessary since it is a plural noun, not a possessive noun. The sentence should be: "Why's the dog eating from the cat's dish?"

4. The apostrophe in "It's" is correct, as it is a contraction of "It is." However, the sentence should be "It's time to wash the players' uniforms." The apostrophe should come after the "s" to indicate possession of the uniforms belonging to multiple players.

5. The sentence is correct. The apostrophe is placed correctly after "cousins" to indicate possession of the iPods belonging to multiple cousins.

6. The apostrophe in "birds'" is correct, as it indicates possession of the chirping by multiple birds.

7. The sentence is correct. The apostrophe is placed after "else" to indicate possession of the idea belonging to somebody else.

8. The sentence is incorrect. The correct sentence is "Jade's been swimming since she was 6 months old." The apostrophe is not needed after "months" since it is not possessive.

9. The sentence is correct. The apostrophe is correctly placed after "son" to indicate possession of the helmet belonging to the son.

10. The sentence is incorrect. The correct sentence is "She has to think about her three daughters' health." The apostrophe should come after "daughters" to indicate possession of the health belonging to multiple daughters.

Hope that helps!