【正确答案】Dear Mr. and Mrs. Smith,
How are you doing? I am writing these few lines to express my heartfelt gratitude to you for offering accommodation when I was in England.
When I look at those pictures, I just can' t help thinking of you. It was so kind of you to take care of me when I was not used to the weather there. Besides, you bought Chinese food for me, which really surprised me. What' s more, I shall always remember those ancient stories you told me, which helped me know more about your culture and history. Nothing will be able to erase my wonderful memories, and I will cherish them forever.
I wish to have chance to express my gratitude to you. I will feel very honored and pleased if you can come to China for a visit and I will be your guide.
Thanks again for what you have done for me. May you be blessed in everything you do.
Yours truly,
Li Hua