将下列句子合并成含有定语从句的复合句

题目

将下列句子合并成含有定语从句的复合句
1.She is the tallest girl in her class.She can play the violin
2.Where is the beautiful picture?You bought it last week.
3.We are looking for the nurse.She looked after my little sister
4.The book is mine.My book is on the desk.

答案