---Who do you think is to blame for the boy’s behavior, Mary or her parents?--- We all think it is Mary as well as her parents that ______ for their son’s bad performance at school.
The pen, _______ I had been writing for ten years, was broken.
Mary has two brothers, ________ are doctors.
The problem _______ you argued about yesterday has been solved.
My aunt bought me a book, the name _______ I have forgotten.
On the way home I met my friend John, from _______ home the thief had stolen a computer.