题目内容：

请根据对话内容，从方框内的选项中选出能填入空白处的最佳选项，其中有两个为多余选项。

(Tom and Lucy are workmates. They are talking about the mobile phone. )

Tom: Hi，what will you do with your broken mobile phone?

Lucy: I'll throw it away.1.

Tom: Don't throw away electronic waste carelessly!2.

Lucy: You mean I should keep these useless things at home? 

Tom3.:But do you know useless mobile phones are harmful to the earth?

Lucy: Oh,I see.4.

Tom: You can sell the phone ,and it can be recycled.

Lucy: All night.5. I’ll do that.

Tom: Great.

A. I think you are right.

B. I' m not saying that.

C. How do you know that?

D. I don' t need it any more.

E. That sounds very interesting

F. It's dangerous to the environment.

G.So what do you think I should do then?