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She smiled happily. a set of amazing white teeth to us. A.exposing B.being expos

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She smiled happily. a set of amazing white teeth to us. A.exposing B.being expos

She smiled happily,________ aset of amazing white teeth to us.

A.exposing                               B.being exposed

C.exposed                                D.to expose

 

试题答案

【答案】

A

【解析】

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