根据短文内容，从所给的五个选项中选出能填入空白处的最佳选项。

Dear Sarah,

Thank you for your letter.  In my family，there are five people, my father, my mother, my sister, my brother and I. My mother, Mrs Green, is a worker. My sister, my brother and I are students. We go to school together every morning. They are in Class 5, and I am in Class 2.  Welcome to my home.

Yours,

Jim

A. We are in No.1 Middle School. B. But we are in different classes. C. My father, Mr .Green, is an English teacher. D. We love our family very much. E. I'm glad to know you.