Use the correct form of the passive voice.

1) It was destroyed by fire in 1745.
2) People are advised not to leave their cars.
3) You are asked not to touch the furniture.
4) Lunch will be severed from 11.00 to 2.00.
5) He was saved from bankruptcy by his friends.
6) The sharks were seen by sailors yesterday.
7) The group is supported by “Greenpeace”.