优质解答
Dear **:
i am very grateful for your unselfish work. thank you so much to spare time to help me learning english. there is an obvious effect as my english performance has been improved a lot. It is you that give me so much help to make such a english idiot like me make this achievement. All appreciations are beyond my words.
thank you so much, my dearest friend.
best regards
sincerely
***
Dear **:
i am very grateful for your unselfish work. thank you so much to spare time to help me learning english. there is an obvious effect as my english performance has been improved a lot. It is you that give me so much help to make such a english idiot like me make this achievement. All appreciations are beyond my words.
thank you so much, my dearest friend.
best regards
sincerely
***