Các câu trên là thì quá khứ đơn, quá khứ hoàn thành

1 Đúng

2. had eaten

3. went / had telephoned

4. hadn't met

5. had started

6. went / had done

7. had gone / went

1. They (come) …………….. back home after they (finish) ………………… their work.

⇒came/had finished

2. She said that she (eat)....this kind of food before.

⇒had eaten

3 .Before he(go)....to visit me, he (telephone).....me.

⇒went/had telephoned

4 .He told me he (not/meet).....such kind of people before.

⇒hadn't met

5. When i came to the theatre,the show (start).......

⇒had started

6. Before she(go).......to the class, she (do) ...homework.

⇒went/had done

7.Last night, Phong (go)......to cinema before he (go)...... home

⇒had gone/went

             #PLTH(cho mình xin vote+ctlhn nhé! ^^)