C
before既是介词也是连词
看作介词的话,则后面接名词 taking
看作连词的话,则后面接句子,before you take (根据前面的句子,判断应该用一般现在时）
You should go over the books before _a test.A.you taking B.take C.taking D.you took
You should go over the books before _a test.A.you taking B.take C.taking D.you took
英语人气：717 ℃时间：2019-08-21 14:47:03
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