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。

（Mary Hand—M；Chen Hui—C）

M: Help yourself to some chocolates. Chen Li brought them from Shanghai.

C: 　    1.    　  I can’t eat anything sweet. It’s my teeth.

M: I’m sorry to hear that.　    2.    　

C: I did. He told me that I have to have one tooth out and two filled. But I can’t find time for it.

M: 　    3.    　

C: But I’m busy now. I think I’ll go next week.

M: I’m afraid you’d better go right now. The sooner you do something about it, the better.

C: 　   4.   　 Can you please tell our head that I’ll be back by lunchtime?

M: 　  5.   　

C: Thank you very much. See you this afternoon.

M: See you.

A. If I were you, I’d take care of them right away.

B. You’d better not worry about yourself.

C. I agree with you.

D. Thanks.

E. With pleasure.

F. Here you are.

G. Did you see a dentist?

（Mary Hand—M；Chen Hui—C）

M: Help yourself to some chocolates．Chen Li brought them from Shanghai．?

C: 　    1    　  I can’t eat anything sweet．It’s my teeth．?

M: I’m sorry to hear that．　    2    　?

C: I did． He told me that I have to have one tooth out and two filled．But I can’t find time for it．?

M: 　    3    　

C: But I’m busy now．I think I’ll go next week．?

M: I’m afraid you’d better go right now．The sooner you do something about it, the better．?

C: 　    4    　 Can you please tell our head that I’ll be back by lunchtime??

M: 　    5    　?

C: Thank you very much．See you this afternoon．?

M: See you．?

—Is that girl under the tree Mary?

—No, that ______be Mary. She is in New York.

A. can　　　　　　　　　　　　　　 B. mustn’t　　　　　　　　　 C. can’t