Ex2:
1. Isn't it
2. Isn't it
3. Does he
4. Isn't there
5. Doesn't he
6. Wasn't it
7. Will they
8. Do they
9. Have we
10. Hasn't she
Ex3:
1. In - on
2. On
3. At - at
4. In - on
5. In
6. For - to
7. In - in
8. At
9. To
10. By
11. At
Ex4:
1. I'd rather you kept silent in the classroom.
2. I'd rather you didn't come to class late.
3. I'd rather he played golf.
