Chương 34.15 Bài Tập 144

XII.1.

1. have never seen
2. hadn't cleaned
3. had ordered
4. have finished
5. had already sold
6. has stopped
7. have turned
8. had just closed
9. had already seen
10. have eaten
11. haven't seen
12. had told
13. had become
14. has started
15. had done - had made