=>
1. A nhấn âm 2 còn lại 1
2. D nhấn âm 1 còn lại 2
3. D /g/ còn lại /dʒ/
4. C /ʃ/ còn lại /tʃ/
5. A let sb V : để ai làm gì
6. D trải nghiệm, kinh nghiệm
7. B glance : liếc nhìn, nhìn qua
8. C lẫn nhau
9. B over the age of 30 : trên 30 tuổi
10. D married couples ~ những cặp vợ chồng/ cặp đôi đã kết hôn
11. C lén lút
12. A include in : bao gồm
13. A ích kỷ
14. D mark the milestones : đánh dấu cột mốc, bước ngoặt
15. I have worked in this hotel for six months.
->chuyển QKĐ sang HTHT, S have/has V3/ed, for + khoảng thời gian
16. While I was staying in Paris last summer, I met her.
-> while QKTD, QKĐ
17. Before he began to use that machine, he had read the set of instructions.
-> before QKĐ, QKHT
18. We spent 2 hours finishing this work.
-> spend time Ving ~ take time to V
19. We should allow him to use his mobile phone.
-> allow sb to V ~ let sb V
20. We heard him sing in the next room.
-> heard sb V
21. It's not worth trying to make her change her mind.
-> It's not worth Ving : không đáng, vô ích khi