It is your unreserved help that enables me to obtain this splendid opportunity of further education. For the following two years I will study hard to reciprocate your sincere help and expectations with excellent grades.

　　Yours truly,

　　Zhang Ying

　　(三)

　　Dear Pres. Smith,

　　I am writing this letter to thank you for your warm hospitality accorded to me and my delegation during our recent visit to your company. I would also like to thank you for your interesting discussion with me which I have found very informative and useful.

　　During the entire visit, my delegation and I were overwhelmed by the enthusiasm expressed by your business representatives on cooperation with our company. I sincerely hope we could have more exchanges like this one when we would be able to continue our interesting discussion on possible ways to expand our economic and trade cooperation.

　　I feel obliged to thank you once more, and I am looking forward to your early visit to our company when I will be able to pay back some of the hospitality I received during my memorable stay in your company.