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Weknowthatasmileisusuallyasignthatpeoplefeelfriendlyand...

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問題詳情:

Weknowthatasmileisusuallyasignthatpeoplefeelfriendlyand...

We know that a smile is usually a sign that people feel friendly and happy,but _____ we don't know who the new person is?(  )

A.what if   B.how come    C.what about  D.why not

【回答】

A

知識點:固定句型

題型:選擇題

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