国立C大学でタイ語の勉強を続けることを止める決心が付いたので、取り急ぎ、お世話になった先生方に簡単な e-mail を送って置くことにしました。

Dear Mr. P
Dear Ms. S
Dear Ms. Sa
Dear Ms. K

 I would like to inform you that I will leave Thai Intensive Course
as of 20 Oct. 2548 ,  because I have to go to USA for a visit of two months.

I deeply appreciate the excellent education you have given me.
I do not know how to thank you enough

Yours Sincerely,
Hiro-1