选择正确的选项，补全对话。

A．No wonder the air in our hometown is becoming dirtier and dirtier.

B．The playground has become a factory.

C．More and more people can afford cars nowadays (现在).

D．Have you heard the news?

E．When we were young, the air was very clean.

Lisa and Ben live in a city. When they were young, they always played in the playground.
Lisa: 【小题1】
Ben: What’s news?
Lisa: 【小题2】
Ben: Oh, my God! 【小题3】
Lisa: Yes. And one of the main reasons is those factories.
Ben: 【小题4】 That’s another reason.
Lisa: Yes. 【小题5】 But now the air sometimes smells bad.