把下列句子改成被动语态,高悬赏

1.The fire was put out by the fireman and people's live was saved by him.
2.His three-year-old son used to be taken to the newsstand with him.
3.The boy was found walking along in the street by me.
4.A new law is gong to be made by us to keep the river water clean.
5.Several world records were broken by Phelps at the Beijing Olympic Games.
6. The meeting has to be put off by us as it is not well prepared.
7.They are expected by us to get along well with each other.
8. These air-conditioners must be repaired by us.
9.He was offered a good price for the second-hand car by me.
10.The mid-tem test will be held by us soon.

无非是固定格式：sb do sth
**************改为：sth be done by sb
其他没什么变的
建议lz自己写练 蛮简单的