1) Chris had cleaned my room and watered the flowers
My room had been cleaned and the flowers were watered.
2) She emptied the whole bottle
The whole bottle was emptied by her.
3) Can't you do anything about it?
Can anything be done about it?
4) You must wear black trousers and a bow tie tomorrow.
Black trouser and a bow tie must be worn tomorrow.
5) Did he mention that at the meeting?
Was that mentioned at the meeting?
6) J will have to check everything again.
Everything will have to be checked.
7) We will never forget him.
He will never be forgotten by us.
8) We informed Peter but he didn't inform Andrew.
Pater was informed by is but Andrew wasn’t informed by Peter
9) Why is he keeping your watch?
Why is your watch being kept by him?