I.
1. A
2. C
3. B
4. B
5. A
6. B
7. A
8. B
9. B
10. B
11. D
12. C
13. C
14. B
15. C
II.
1. had
2. didn't
3. lived
4. Did ... watch
5. bought
6. gave
7. stopped
8. washed - weren't
9. ate
10. moved
III.
1. She had an exam yesterday.
2. You have to stay inside during recess when you are sick.
3. Lan didn't go to school last week because she had a cold.
4. Minh went to the dentist yesterday because he had a toothache.
