A：What’s the matter with you?
B：小题1:
A：How long have you been like this?
B： 小题2:
A：That sounds terrible!
B：The chemical factory produces terrible gas. The bad air makes my chest hurt. Please read this article.
A： 小题3:
B：It’s about air pollution in China. Today，air pollution has become a serious problem.
A： 小题4: What should we do as a student?
B： 小题5:
