Task 2
you mustn't throw away
you mustn't go
you mustn't read that
you mustn't share that
you mustn't touch
you mustn't listen
you mustn't open
you mustn't tell
Task 3
1) can't
2) mustn't
3) mustn't
4) mustn't
5) can't
6) mustn't
7) can't
8) can't
9) mustn't