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Weshouldn'tdrink________wedriveandwemustn'tdriveif   we...

問題詳情:

Weshouldn'tdrink________wedriveandwemustn'tdriveif   we...

We shouldn't drink ________ we drive and we mustn't drive if    we've drunk.

A.unless  B.before  C.until  D.while

【回答】

B [考查狀語從句。句意:開車前我們不應喝酒,而如果喝酒了就一定不要開車。根據句意可知,此處應用before引導時間狀語從句。]

知識點:連詞

題型:選擇題

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