II.
1. A
2. A
3. D
4. A
5. B
III.
1. They didn't use to go to the cinema every Sunday last year.
2. Linda used to live with her parents.
3. I used to have time to collect stamps when I was in primary school.
4. He used to be a poor man.
IIII.
1. No, they are not.
2. The most effective thing is that we should use natural resources as economical as possible.
3. No, we do not.
4. Many people do not approve of using nuclear power because it's very dangerous.
Test 5.
1. C
2. B
3. A
4. A
5. B
6. D
7. D
8. A
9. D
10. D
11. C
12. A
13. C
14. D
15. B
16. C
17. D
18. A
19. D
20. B