把下列句子改为被动语态

1.Machines are made by them in that factory.
2. This song is liked by everybody.
3. The stamps aren't showed to me by him.
4. Rice are growed by people in the west of Japan.
5. Tom is often helped by him when Tom is in trouble.
6. Are many buildings built by the workers ?
7. Are glasses sometimes broken by Kate ?
8. Is a letter always sent to Mr Hu by you ?
9. What are often told to boys to do by the teachers ?
10. How many desks are bought by them every term ?
11. That kind of shoes was sold by them in this shop last week ?
12. A story was told to us by Cranny last night ?
13. The dictionary wasn't given to me yesterday ?
14. Anything wasn't bought by him before he left .
15. Was the blackboard cleaned by him just now ?
16. When was supper cooked by her yesterday ?
17. Where were they made by her ?
18. Whose ruler was borrowed by you ?
19. The young tree must be tied to the stich by us.
20. The bike can't be ment by them in that shop.
21. Her baby should be took care of by you.
22. It may be took back home by you .
23. May the baby be looked after by me at home ?
24. Must our exercise-books be handed in by us now ?
25. Can this radio be ment by you here ?