Dear Mr.X:
Hello!
I'm sorry that I did many wrong things in these two month.
In computer class,I played computer games.In art class,I didn't draw anything,but only read books.In music class,I played piano loudly and sing quietly.Sometimes,I talked quietly in the class.
I sometimes did my homework in class.I always ran in the corridor with my friends.That was dangerous.I will not do these from today.
I know I was wrong.I will never do these from now on.I will listen to teachers carefully in class.I want to be a good student.I really hope teachers and classmates can believe me.
Your Student,
Cindy