问题标题:
Itbethevocabularythatcausedyoutheproblemintheexercisebecauseyouknowalotofwords.()A.mayB.couldn’tC.shouldD.needn’t
问题描述:
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
蒋俊树回答:
答案B.根据原因状语从句becauseyouknowalotofwords可知,主句应该是否定的,A项和C项可排除.needn’t表示“不必”.此处为对可能性的推测,couldn’t表示“不可能”.根据句意可知,B项符合语境,故选B.
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