英语作文：给英国笔友DAVID写信，介绍上个月一次经历。接待美国某高中学生访问团来你校开展交流活动。要求

Dear David, How about you? I'm so glad to tell you sth about my experience. The exchange activity is about the visitors who comes from American senior high school to launch activity with us. It's an amazing chance for me to practice my oral Engli