Dear John,
Don't get annoyed with your parents.Your parents are worried about you. I think you can't surf the internet because it is bad for your eyes and your sleep. We are middle scool students, so we must study hard, mustn't we? We need to learn from the famous men, because they study hard, so they can be famous around the world. Do you mind what I say? I hope you improve your study and listen to your parents.
Yours,
Jack