把下列句子合并成含定语从句的复合句,

把下列句子合并成含定语从句的复合句,
1.This is the boy.He broke the window．
2.Tom found the book.The book was lost.
3.She has a friend.He plays the piano very well.
4.Linda has a brother.He likes playing soccer.
5.Rose prefers music.She can sing along with.