Bài 1:
1. came - had finished
2. had met
3. went - had read
4. hadn't worn
5. had started
6. listened - had done
7. had gone - went
Bài 2:
1. After David had gone home, we arrived.
2. Before we took a look around the shops, we had lunch.
3. When we got out of the office, the light had gone out.
4. By the time we started our work, she had explained everything clearly.
5. Before my mother came home, my father had watered all the plants in the garden.
I/
6. watched - had done
7. was - was
8. had gone - sat - rested
9. had gone - went
10. won
11. told - had visited
12. had - prepared - went
13. had - watched - rang
14. watched - had done
15. had washed - slept
16. was - had eaten
17. had broken
18. hadn't worked - would have attended
19. had had
20. stay
1. went - had finished
2. had already seen
3. went
4. hadn't eaten
5. had already begun