XIII.
1. D
2. D
3. A
4. A
5. C
6. B
7. A
8. A
9. B
10. C
11. C
12. C
13. D
14. D
15. D
XII. (Mình nghĩ vậy)
2. He has worked as a bank clerk for 3 months.
3. We have not flown to Singapore for 5 years.
4. I haven't had my hair cut since November.
5. We haven't called each other for 5 months.
6. We haven't met for a long time.
7. How long have you had it?
8. I haven't ever had such a delicious meal before.
9. The last time I saw him was 8 days ago.
10. It is 3 days since I last took a bath.