1. don't have to
2. does ... have to
3. has to
4. have to
5. A: have to B: do
6. has to
7. has to
8. have to
9. do ... have to
10. has to
11. has to.
12. doesn't have to
13. have to
14. A: does B: does
15. have to
Везде после have должно стоять to
В третьем has to
В шестом has to
В 11 have not to
