假定你是李华，你的美国朋友sarah 打算暑期来北京旅游，来信询问改建后前门大街的情况。请你写封回信，简单介绍以下内容：

　　1.简况：长800余米、600多年历史、300余家商铺;

　　2.位置：天安门广场南面;

　　3.交通：公共汽车17、69、59等路，地铁2号线;

　　4.特色：步行街、当当车、茶馆、剧院等。

　　参考词汇：步行街 pedestrian street

　　当当车 trolley car

　　地铁 subway

　　注意：

　　1.词数100左右;

　　2.可以适当增加细节，以使行文连贯;

　　3.开头语已为你写好，请将完整的回信书写在答题卡上。

　　【参考范文】

　　Dear Sarah,

　　Thank you for your letter for asking about the rebuilt Qianmen Street. Here is something about it.

　　Qianmen Street is a famous street of over 600 years old. Along this 800-meter street, there are more than 300 shops. As the street is in the center of Beijing, just to the south of Tian’anmen Square, it’s very convenient to get there by bus. You may take Buses No. 17, 69 or 59. Subway Line 2 has a stop there too. Qianmen Street is a pedestrian street, but there are trolley cars to take you not only to the shops, but also to chatters and teahouses where you can experience a truly Chinese way of life. I’m sure you‘ll like it.