急求一篇英语感谢信，谢谢

真挚的纯手写版回信:

Dear Mary,

I am writing to tell you a good news---I passed CET-4!

I sincerely thank you for your kindness. Thanks to your encouragement, I could get up early every morning. Thanks to your effort to be such an excellent English partner, I improved not only my speaking English and other skills.

I know, it is impossible to pass it without your help. I am lazy and with poor English months ago. I owe you so much. So if you need any help in near future, please do not hesitate to let me know. It will be my pleasure to do something for you.

Thanks and best wishes,

Yours gratefully,

******