用who,which,that,when,where或why填空(悬赏20)

题目

用who,which,that,when,where或why填空(悬赏20)
1.The old man___is wearing a blue shirt is John's uncle.
2.I still remember the house___I lived in two years ago.
3.I'll never forget the day___I had to leave school.
4.That's the playground___we'll have a basketball match.
5.Do you know the reason___she gave up swimming?

答案

who
which
when
where
why