5. A sudden increase in water pressure may break the dam
-the dam may be broken by a sudden increase in water pressure
6. We must take good care of books borrowed from the library.
-book borrowed from the library must be taken good care of
7. A man I know told me about it
-i was told about it by a man how i know
8. We can never find him at home for he is always on the movie
-he can never be found at home is he for always on the movie

1. They told the new pupil where to sit
->they new pupil was told where to sit
2. I know that they had told him of the meeting
->i know that he has been told him of the meeting
3. Nobody has ever treated me with such kindness
->i have never treated with such kindness
4. No one believes his story
->his story isn't believed by anyone
5. A sudden increase in water pressure may break the dam
->the dam may be broken by a sudden increase in water pressure
6. We must take good care of books borrowed from the library.
->book borrowed from the library must be taken good care of
7. A man I know told me about it
->i was told about it by a man how i know
8. We can never find him at home for he is always on the movie
->he can never be found at home is he for always on the movie