Dear mary:
how are you doing these days? I write this letter for expressing our appreciation of your great entertainment .
we have a very nice treavel in London,and have a wonderful impression on the senery there.London is a very beautiful city .
Not only the views but also the delicious food excited us.Facing this charming city and its abundant culture,we deeply felt it's really a huge honor.
would you like to accept our invitation for travelling in China?We sincerely wish you a pleasure journey here.
Expresses our thanks once more .Have a nice day !