1. don't have to
2. doesn't have to
3. doesn't have to
4. have to
5. doesn't have to
6. have to
7. doesn't have to
8. doesn't have to
9. have to
10. doesn't have to
11. have to
12. has to
13. don't have to
14. have to
15. don't have to
16. doesn't have to
17. have to
18. don't have to
19. doesn't have to
20. have to