Răspuns:
1. could
2. must
3. can/can't
4. can
5. have to
6. can't
7. Can
8. must
9. will
10. have to
11. can
12. could/ needn't
13.Shall
14. musn't
15. has to
16. have to/ will
17. can't/ have to
18. couldn't
19. must
20.can
21. don't have to
22. must
23.mustn't
24. must
25. shall
26. mustn't
27. have to
28. could
29. can/ can't
30.must
