Ask him whether or not he knows the man who is teaching in the other room.
The students whom you taught two years ago are here to see you.
I would like to see the man whose child you were teaching.
I asked him if I could take the books which were on his desk.
May I borrow the book which you were reading last night?
The man whose car is in the yard is here to repair the chairs whose legs are broken, isn’t he?