将下列各题的简单句合并为含有定语从句的复合句

将下列各题的简单句合并为含有定语从句的复合句1.The boy likes playing soccer.The boy is seven years old.____________________________________________2.He went into a store.There were a lot of toys.____________________________________________3.Jack can answer these questions.These questions are difficult to others._____________________________________________4.I still remember the classroom.I met her for the first time there._____________________________________________5.This is the book .I want to read the book._____________________________________________