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 Theworkerexaminedthemachinecarefullytomakesurethatitwo...

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問題詳情:

 Theworkerexaminedthemachinecarefullytomakesurethatitwo...

 The worker examined the machine carefully to make sure that it wouldn’t _______ while working.

A. break away   B. break down      C. break up     D. break out

【回答】

B

知識點:片語 短語

題型:選擇題

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