完成对话，从方框中选择正确选项（有一个选项与对话内容无关）。

A. Really? That's terrible! B. Wherever you are, you see people use them. C. Didn't you watch the news? D. What else should we stop doing? E. Can we use them while we are on the plane? F. But at the same time they can be very dangerous.

M: You are using mobile phone again while crossing the street.

W: No. What happened?

M: A girl was knocked clown by a car because she was using her mobile phone.

W:

M: As we all know, mobile phones make it easier for us to communicate with others.

W: You're quite right. I won't do it again.

M: We shouldn't use them when we are driving. And we shouldn't talk on them for too long.

W:

M: No, we can't. Using mobile phones isn't allowed on the plane.

W: Oh, I see.