英语作文一篇，急求急求！

With the deepest gratitude,I am writing to you to express my thanks for your hospitality when I was traveling in London.You know it is how hard for a foreigner to travel in a foreign country alone.I couldn't imagine what my vacation will be without your help.I enjoyed myself very much.I am sure I will miss you after I come back home.I will be glad if you can come to China to visit me.Then it is my turn to welcome you.Thank you again and wish everything goes well. Thank you from bottom of my heart again. Your sincerely,