1 . 假定你是某中学高三学生李华，你的美国朋友John来信说想来你所在的城市——北京旅游，想让你介绍一下旅游景点，并希望你担任导游。他在信中还问及环境和交通问题，请你在回信中解答。
注意：
1.词数100左右；
2.可适当增加细节，以使行文连贯；
3.信的开头和结尾已给出，不计入总词数。
Dear John,

I'm very glad that you'll come to our city.______________________________________________________

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