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We shouldn’t drink _______ we drive and we mustn’t drive if we’ve drunk.

A. unless????????? B. before???????? C. until???????????? D. while

 

【答案】

B

【解析】

试题分析:A. unless除非,B. before前面,C. until直到,D. while时候,句意:我们开车前不应该喝酒,如果喝酒了不能开车。所以选B

考点:考查连词

 

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