写一封信给你的美国笔友Mike,在信中介绍你的家人.

Dear Mike,
I'm very glad to hear from you. You want to know more about me, now let me tell you something about my family. There are four people in my family, they're my father, my mother, my little sister and I. Both my parents are doctors, my sister and I study in the same school, but she is in Grade Seven and I'm in Grade Nine. We love each other. I have a happy family.
Would you mind telling me something about your family?
Please say hello to your family.
Yours,
Lin Tao
再问： 中文意思