a)
- don't have to
- must
- didn't have to
- Do you have to
- had to
- Did you have to
- shouldn't
- mustn't
b)
- shouldn't go
- they have to
- don't have to
- should speak
- mustn't go
B
1 - I
2 - G
3 - A
4- D
5- J
6 - C
7 - F
8 - E
9 - B
10 - H
What will you find here? 1- Ideas and resources which will help you improve your English. 2- Students' class assignments (their English portfolios).