Dear Amy:
thank you for your letter.I am so glad to have a talk about your present situation with you.Frist,you should know how lucky you are.Many teenagers have to drop out of school because （没有of） they have poor families.So you ought to be grateful to your present life.Second,it's important for you to be confident about (不用of) yourself.Of course,I think you should communicate with your new friends .You will find that you can get along well with them.Above all,as a senior high school student ,you should learn to be independent of your parents .
If you miss them ,you can keep in touch with them.What's more important is that you should be happy every day .I believe that with the aid of classmates and teachers,you will overcome the difficulties.
Wish you happy every day!