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介词.副词填空 They worked very long hours many weeks before everything returned - norm

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介词.副词填空 They worked very long hours many weeks before everything returned - norm

介词、副词填空

They worked very long hours    manyweeks before everything returned     normal.

 

试题答案

答案:

解析:
for; to.   他们这么多周来工作了很长时间才使一切恢复到正常状态。

 

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