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7、Every housewife knows that it’s dangerous to open the cover of the washing machine        _______  it is still drying clothes .

A. until         B. before        C. while         D. after

7、C

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科目：高中英語 來源： 題型：

Every housewife knows that it’s dangerous to open the cover of the washing machine        _______  it is still drying clothes .

A. until         B. before        C. while         D. after

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科目：高中英語 來源： 題型：

Every housewife knows that it’s dangerous to open the cover of the washing machine        _______  it is still drying clothes .

A. until         B. before        C. while         D. after

查看答案和解析>>


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