为你解答.
1. The floor is cleaned by my mother every day.
2. The door of the class was broken by the boy.
3. Something should be done to help those in need.
4. A gift has been bought by Tom for his mother.
5. The old man are being helped cross the road by us.
6. Lucy's mother will be given a big surprise by Lucy.
7. A library was built in our school last year.
8.Most ofthe work is done by Women in this factory.
9.The bike will be mended by him in two days.
10. The TV has been turned off by me.
11. This medicine must be taken three times a day.
12. A horse is being drawn by her in her room.
13. The light was invented by Thomas Edison.
14. She is often heard to play the piano by me.
15. The old should be spoken to politely.
16. My room will be cleaned this evening.
17. All the rooms have been cleaned by me .
18. A kite is being made by him for his brother.
19. Many trees were planted by the students yesterday.
20. He was seen to get off the bus just now.
21. A wallet was found lying on the ground by me.
22. Your room can be cleaned by you tomorrow.
23.The classroom must be kept clean by us.
24. My room is cleaned by me every day.
25.My room is being cleaned by me now.
26.My room has been cleaned by me.