D
2 You should say you are sorry
3 He ought ask his teacher about it
4 You should start having lessons
5 She ought not to watch TV late
6 You should get some exercise
E
1 can
2 could
3 ought
4 can
5 should
6 couldn't
7 can't
8 ought to
9 can
10 can
F
1 - D
2 - C
3 - B
4 - E
5 - A
2 You should say you are sorry
3 He ought ask his teacher about it
4 You should start having lessons
5 She ought not to watch TV late
6 You should get some exercise