Dear Mr. Brown,
How are you doing recently? I have already arrived in China. Thank you for your help when I was in U.S.A.
I want to ask you to do me a favor. When I left your house, I forgot to bring my dictionary back. It was given by my American teacher and it is very precious. I guess it was on the bookshelf in the bedroom. Could you please send it to me? I will pay for the postage.
Besides, the experience of studying in U.S.A is very unforgetable. You are so kind that you make me feel comfortable like I was at home. I wish I would go to U.S.A again and see you some day.
Best regards.
Yours sincerely,
Li Hua