1 couldn't
2was able to
3 had to
4 was able to
5 didn't have to
6have to
7 couldn't
8 was able to\could
9 have to
10 were able to
1 couldn't
2was able to
3 had to
4 was able to
5 didn't have to
6have to
7 couldn't
8 was able to\could
9 have to
10 were able to