Dear XXX
I 'm sorry that I said something impolite to you yesterday.
Yesterday you gave some ideas to me for my teacher.But I didn't understand what you said,so I may make you angry.I felt a little sorry,but I wasn't talk to you at once.Now I cant aford my heart.I'm very sorry.I know you are right.If you give ma a chance again,I would be better to you.
Can you excuse me for that thing?
Your cincearly
XXX