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 Theworkersinthisfactorywork

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問題詳情:

 Theworkersinthisfactorywork

 The workers in this factory work_____ 10 hours a day.

       A. for up to   B. up for to     C. to up     D. up to for

【回答】

A

知識點:介詞和介詞短語

題型:選擇題