Bạn chỉ cần thay thế những từ trong ngoặc bằng đáp án thôi là được câu hoàn chỉnh nha. Riêng những câu hỏi thì bạn viết lại cả câu theo đáp án nhé
Đáp án:
1. have lived
2. lived
3. left - has worked
4. has taught
5. bought
6. How long have you learnt English?
7. haven't seen - said
8. visited 
9. have leant
10. have been
11. What did you do yesterday?
12. have read
13. was
14. has taught graduated
15. was