摘要：[2013安徽]34. It be the vocabulary that caused you the problem in the exercise because you know a lot of words. A. may B. couldn’t C. should D. needn’t
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It ________be the vocabulary that caused you the problem in the exercise because you know a lot of words.????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? (2013·安徽，34)
A．may B．couldn’t
C．should? D．needn’t
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