4. were not listening
5. receive
6. have, been living
7. came, didn't
8. did, see, saw
9. will be used
10. will happen
11. has, left
12. has been built
13. be cleaned
14. was lying
15. was raining
16. was cooking
17. are doing, not making
19. arrives
20. are made
21. writing
22. be done
24. to learn
25. tell, told
27. to make, work
28. to do, to go
mark，等回来答
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