1. They **have not bought**.
2. Meg and Steve **are**.
3. I **have seen**.
4. We **have played**.
5. The children **have finished**.
6. Mary **has watched**.
7. Mary **has not written**.
8. I and my friend **have not finished**.
9. You **made** the cake?
10. My brother **has never seen** this film.
11. You **ever seen** this film? (This seems like a question, but it should be "Have you ever seen this film?")
12. Our school team **has just won** the competition.
13. They **have already written**.
14. He **has not prepared**.
15. I **have already received**.
16. She **has never eaten**.
17. We **have not met**.
18. We **have just missed**.
19. They **have already done**.
20. What **have you already bought**?

 

5. have finished
6. has watched
7. hasn't writen
8. havent't finished
9. Have you made
10. has never seen
11. Have you ever seen
12. have just won
13. have already writen
14. hasn't prepared
15. have already seen
16. has never eaten
17. haven't met
18. have just missed
19. have already done
20. have you already bought