Réponse :
1.must
2.can
3.can
4.must
5. mustn't
6.must
7.must
8.can
9. can
10.can't
11. mustn't
12.can
13.can't
14.can
15. mustn't
16. mustn't
17.can
19.can..must
20.must
21.can't
22.can...must
23.must
24. mustn't
25.must
26. mustn't
27. can't
28.must
29. must
30.can
31.must
32: mustn't
33.must
34.can...can't
VOILA:)