Dear Hellen,
What I want to say is thank you. I don't know how to express and pay back to your kindness and pateint. Thanks fo giving me a lot of help in my study. I hope that I will be not only your best classmate, but also your best freind.
Best Regards,
Jessie
手工翻译。地道的表达。
希望对你有帮助。
祝你开心。