Ответ:
Ex 2

1. Films didn't use to have sound but now they do.

2. Did cameras used to be very expensive?

3. Harrison Ford used to be a carpenter before he became a film star.

4. Glenda Jackson used to be a film actress but now she is a politician.

5. Did Bruce Willis used to have a lot of hair?

6. It didn't use to be expensive to go to the cinema but it is now.

Ex 3
1. didn't use

2.live

3.used to have

4.got

5.became

6. wasn't use to be

7.used to spend

8.used to win

Объяснение: