作文:写一封电子邮件。 假设你的朋友David在美国，他写信来想了解你的高中生活情况提出一些问题:你高...

Dear David: Hi, I am(your own name), I am glad to hear from you. I am grade 11 , there are many courses in my school, shuch as, Math, Physics and Chemistry. However, my favorite