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21．― ?―Yes.I'm looking for a pen．A．Can I help you B．What are you doing?C．What do you want to buy D．What do you like? 【查看更多】

 

題目列表(包括答案和解析)

— _________?

—Yes，I'm looking for a pen．

A．Can I help you                                         B．What are you doing?

C．What do you want to buy                           D．What do you like?

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