$\text{Đáp án chi tiết :}$

`↓`

$\text{Put the verbs in brackets into the correct tense:}$

$\text{1 . received ( DHNB : this morning)}$

$\text{2 . gave(DHNB : a few minutes ago)}$

$\text{3 . was sitting(DHNB : Khi có 1 hành động đang diễn ra thì có hành động khác xen vào dùng quá khứ tiêp diễn)}$

$\text{4 . has written(DHNB : hành động trong quá khứ kết quả lưu đến hiện tại dùng hiện tại hoàn thành)}$

$\text{5 . was speking(Thì quá khứ tiếp diễn)}$

$\text{6 . went ; were studying ( Quá khứ - Quá khứ tiếp diễn)}$

$\text{7 . were painting(Quá khứ tiếp diễn)}$

$\text{8 . was studying}$

$\text{9 . boils ( sự thật hiển nhiên -> thì hiện tại đơn)}$

$\text{10 . have you known ( hiện tại hoàn thành)}$

$\text{11 . burnt ; was cooking ( Quá khứ + quá khứ tiếp diễn)}$

$\text{12 . were crossing ; shouted ( Quá khứ + quá khứ tiếp diễn)}$

$\text{13 . were you doing}$

$\text{14 . won't rain ( hope sb + will/won + Vinf) ; start}$

$\text{15 . has played ; was}$

$\text{16 . will never forget ; have just told}$

$\text{17 . won ( DHNB : in 2004)}$

$\text{18 . were playing ; was writing}$

1. was receiving

2. gave

3. was sitting

4. has written

5. was speaking

6. was going ; studied

7. were painting

8. was studying

9. boils

10. have you known

11. burnt ; was cooking

12. were crossing ; shouted

13. were you doing

14. won't rain ; start

15. has played ; was 

16. will never forget ; have just told

17. won

18. were playing ; was writing