II. Write the correct form or tense of the verbs in brackets.

1. has failed 

2. established

3. have they lived/moved

4. have finished

5. am studying

6. did you buy/bought

7. Have you ever been

8. volunteers

9. to help

10. donating

- Chúc cậu học tốt.

Đáp án:

`1.` has filed

`2.` established

`-` vì có "in 19'16" dấu hiệu thì QKĐ

`-` Cấu trúc: S + V(ed/V2)...

`3.` have they lived /moved

`-` có "two years ago"dấu hiệu thì QKĐ.

`4.` have finished

`-` có "so far" dấu hiệu thì HTHT

`-` Cấu trúc: S + have/has + Ved/V3

`5.` am studying

`-` có "now'' dấu hiệu thì HTTD

`-` Cấu trúc: S + am/is/are + V-ing..

`6.` did you buy/ bought

`-` vì có "yesterday" dấu hiệu thì QKĐ

`-` Cấu trúc: S + V(ed/V2)...

`7.` Have you ever been/ haven't

`-` vì có "yet" dấu hiệu thì HTHT.

`-` Cấu trúc:

(?) Have/has + S + Ved/V3...?

`8.` volunteers

`-` có "once a week" dấu hiệu thì HTĐ

`-` Cấu trúc: S + V(s/es)..

`9.` to help

`10.` donating 

`-` suggest + V-ing (câu gián tiếp)