Английский язык, 6 класс, помогите пожалуйста! Ответ нужен завтра! Заранее спасибо!

1. I have answered
2. Have you found
3. haven't
4. left
5. has already gone
6.have you prepared for the test yet?
7. have
8. I have just finished
9. did
10.took
11. I haven't walked the dog yet
12. I have already done it