Past simple:
I saw how a cat was saved from a tree by a fireman.
Tree in my yard was planted by my grandfather.
My favourite book was written by Pushkin.
Present simple:
Children are very happy to meet their mother.
A bone was hidden by a god.
Tom's car was found by policeman.
Future simple.
Homework will be done by me.
The new building will be built soon.
The bike will be bought by my brother.