急，帮忙，

Dear Tom,

First, I would like to welcome you to our class. I know you just moved here from outside the city, and you don't have many friends here in the class and feel bad about it. Actually, let me tell you this, our class is very friendly and is more than happy to have you as a member and friend. You don't feel fit-in now is possibly because you are too shy, and you don't talk to people if you don't know them. As you know, to make friends you need to talk to people, and to engage in their discussion and games. So my suggestion to you is: After school, don't go home directly. Hang around, and see what people are up to, and join them for after-school activities if you can. I'm sure you will have a lot of friends very soon.

Cheers,
Li Hua