Ответ:

1. Did you use to wear glasses?

2. I didn't use to like Callum but now he is one of my best friends. CORRECT

3. I usually go swimming before I go to work. CORRECT

4. He used to be very overweight but then he went on a diet. Now he is very slim.

5. Did you use to play with your sister when you were little? CORRECT

6. My wife doesnt use to drive to work. She normally walks or goes by bus. CORRECT

7. Where did you use to work before you came here?

8. Do you usually get home before 8.00? CORRECT