【正文】
y. Your friendly warmth made it possible that I have a pleasant time in America. And it was your generous help that allowed me to know American culture better. In addition, I consider its a great honor for me to make friends of you. I hope that you could visit our country in due course so that I could enjoy the opportunity to repay your kindness and refresh our friendship. Please accept my sincere thanks. Wish you all the best. Yours truly 3 / 3