21.( )Hi, can I help you? . A.Yes, please B.No, I can’t C.Yes, I can D.You are welcome 查看更多

 

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-Hi, can I help you?
-_______.
A.No, I can’t.B.You are welcome.C.Yes, please.D.Yes, I can.

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-Hi,can I help you?

-________.

[  ]

A.

Yes,please

B.

No,I can't

C.

Yes,I can

D.

You are welcome

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