____________ sufficient rest from work, the civil authorities are attempting to make a breakthroughin limiting working hours. [ ]A. Having ensuredB. To ensure-高中英语-魔方格

◎ 题干

____________ sufficient rest from work, the civil authorities are attempting to make a breakthrough
in limiting working hours.

[ ]

A. Having ensured
B. To ensure
C. Ensured
D. Ensuring

◎ 答案

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◎ 解析

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◎ 知识点

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