2.
1)can't
2)could
3)can
4)can't
5)can
3.
1)mustn't
2)don't have to
3)mustn't
4)don't have to
5)mustn't
2.
1)can't
2)could
3)can
4)can't
5)can
3.
1)mustn't
2)don't have to
3)mustn't
4)don't have to
5)mustn't