You always ask questions ...... are difficult to answer.
which
That's the house ...... the old lady lives.
where
April was ...... they got married.
when
Can you remember the name of the person ...... you saw?
who
Swimming is a sport ...... exercises your whole body.
which
He's the boy ...... mother sang in the concert.
whose
Christmas is ...... most families get together.
when
This is the movie ...... we saw last weekend.
which
