2 - won`t have to
3 - didn`t have to
4 - won`t have to
5 - didn`t have to
6 - doesn`t have to
7 - don`t have to
8 - has to
9 - had to
10 - has to
11 - have to
12 - won`t have to
13 - have to
14 - had to
2 - can
3 - could
4 - would
5 - couldn`t
6 - shouldn`t
7 - needn`t
8 - could
9 - would
10 - can; can`t
11 - needn`t
12 - can; can
13 - mustn`t
14 - should
15 - can
