5. was listening
6. traveling
7. already knows
8. was built
9. to go
10. was
11. will return
12. was talking
13. were making
14. was cooking
15. haven't finished
16. English is spoken in the world.
17. The picture was drawn yesterday.
18. Car tires were recycled to make pipes and sandals.
19. Cloth bags should be used instead of plastic bags.
20. Christmas songs were sung at Christmas Eve.
21. Christmas house was built more than one hundred years ago.
22. Would you mind if I asked you a personal question?
23. Would you mind waiting for me outside my office?
24. Do you mind if I sit here?
25. Hamlet was written by Shakespeare.