将下列句子合并成带有定语从句的复合句.
问题描述：
将下列句子合并成带有定语从句的复合句.
（1） He is the young writer.He wrote the book.
（2） Do you know the doctor?He comes here once a month and examines the workers.
（3） The foreign guest is Mr.Green.You saw him at the school gate.
（4） He is the new head.I was talking about him this morning.
（5） I”ve received the book.Father sent it to me.
答
（1） He is the young writer.He wrote the book.He is the young writer who wrote the book.（2） Do you know the doctor?He comes here once a month and examines the workers.Do you know the doctor who com...