問題詳情：
A: I heard that the pollution in this city is serious
B: __1___
A: What kind of pollution is it?
B: ___2__
A: Why do you think the air pollution is so dirty?
B: __3__
A: __4__
B: Many birds can’t live here, they fly to the south.
A: ___5___
【回答】
FEDCB
知識點：資訊匹配
題型：未分類
