2. meet

→ câu ĐK loại 1: if + S + HTĐ, S + will(not) + V0

3. đúng

4. đúng

5. has been 

→ S + HTHT + since + S + QKĐ

6. had been/came

→ S + QKHT + before + S + QKĐ

7. This tree has to be cut down before the raining season.

8. The ceilings fans weren't turned off last night.

9. The Internet has been used to get the news by many people.

10. đúng

11. đúng

12. She asked me if I was hungry.

13. đúng

14. đúng

15. đúng

`2.` meet (Câu điều kiện loại 1)

`3.` must be finished (Bị động với ĐTKT: must be Vpp)

`4.` were playing (Thì quá khứ tiếp diễn)

`5.` have been (HTHT + since + QKĐ)

`6.` had been - came (QKHT + before + QKĐ)

`7.` This tree has to be cut down before the raining season. (Bị động: have/has to be Vpp)

`8.` The ceilings fans weren't turned off last night. (Bị động QKĐ: was/were Vpp)

`9.` The Internet has been used to get the news (by many people). (Bị động HTHT: have/has been Vpp)

`10 + 11.` Đúng.

`12.` She asked me if I was hungry (Câu tường thuật lùi thì: HTĐ `->` QKĐ)

`13 + 14 + 15.` Đúng.

@ `Ly`