假如你是黄奕，你的朋友Tony给你发了封信，想了解北京的情况，请你根据下面的几幅画，给他回信，写一些你假期到北京旅行的经历。

    要求：1．语句通顺，符合英语表达习惯； 2．按顺序描述图画；

          3．注意书信格式；4．词数100词左右。

  参考词汇：清华大学Tsinghua University  北京烤鸭 Beijing Roast Duck

1、Dear Tony,

   Thanks for your last letter. You said you wanted to go to Beijing for holiday an, you wanted to know something about Beijing. Let me tell you about it.

   I have been to Beijing twice. I have visited the Great Wall and the Palace Museum And I have taken a lot of photos there. Last summer, I went to Beijing again with m sister, we went to Tsinghua University and ate Beijing Roast Duck in a restaurant. They were delicious. After that, we went to Wangfujing Market and bought some things. We enjoyed ourselves there.