7/7 Practice!

1. It's no use thinking about what you can't control.
2. It's no use thinking about what I can't control.
3. It's no use thinking about what happened already.
4. It's no use worrying about a diet after you ate a lot.
5. It's no use crying over spilled milk.
6. It's no use pretending to be cool about it.
7. It's no use taking care of me after you hurt me.
8. It's no use advising me after I did everything already.
9. It's no use telling on me because I have already confessed to mom what I did.
10. It's no use taking care of someone that you already broke up with.

I can understand some of these feelings unfortunately. :(

Overall, your sentences were fine.  I just added a few words for clarity and fixed some spellings.

7/7 Practice!

1. It's no use thinking about what you can't control.
2. It's no use thinking about what I can't control.
3. It's no use thinking about what happened already.
4. It's no use worring about diet after you eat a lot.
5. It's no use crying over split milk.
6. It's no use pretending to be cool about it.
7. It's no use taking care of me after you hurt me.
8. It's no use advising me after I did everything already.
9. It's no use telling on me because I have already confessed mom what I did.
10. It's no use taking care of someone you already broke up with.