(英)将几个句子改为被动语态(急)

1.I has been told where to go by nobody.
I hasn't been told where to go by anybody.
2.By whom was the book written?
Whom was the book written by?
3.Were you interested in/by the idea?
4.Those books should have been taken back to the library (by you).
5.This watch doesn't need to be winded (by you).
To wind this watch isn't needed.
6.It's believed that the girl is innocent (by people).
7.This scientific theory has been proved false (by experts).
8.Someone should/will have to be found to take his place (by us).
9.Nothing can be done by anybody/anyone unless more information is given to us by someone.
Anything can be done by nobody unless more information is given to us by someone.
10.This dress can't/mustn't be washed (by you).It must be dry-cleaned.