=>
1. Has he written
2. haven't made
3. hasn't seen
4. have been
5. have met
6. Have you got
7. have bought
8. have you been
9/10. Has he spoken/hasn't had
11. has become
12. has never won
13. has sent
14. have done
15. have eaten
16. have made
17. Have they paid
18. has taken
19. hasn't come
20. have lost
Thì HTHT
(+) S + have/has + V3/ed
(-) S + have/has not + V3/ed
(?) Have/Has + S + V3/ed?
