Chia dạng đúng của động từ trong ngoặc ở thì quá khứ hoàn thành.

1. Yesterday they went home after they (finish) ........had finished....... their work.

2. When we came to the stadium, the match (already start) ........had already started........

3. Many people (move) .........had moved........to the new place before the storm occurred.

4. I sat down and rested after they (go) .......had gone.......

5. Before he died, he (be) .......had been...... ill for several days.

6. Last night before he watched TV, he (do) ........had done........ the exercise.

7. She went to the department after she (clean) ........had cleaned........ the floor.

8. When I got to the party, they (go) .......had gone.......home.

9. By the time the police arrived, the house (be) ........had been....... burned down.

10. By last year, twenty schools in this province (be) ........had been....... built.

1. had finished

2. had already started

3. had moving 

4. had gone

5. had been

6. had done

7. had cleaned

8. had gone

9. had been

10. had been