题目内容
【题目】The committee __________ over the problem among themselves for two hours.
A. has argued B. has been arguing
C. have argued D. have been arguing
【答案】D
【解析】句意:委员会委员们对这个问题已争论了两个小时。由themselves可知committee强调个体为复数,谓语动词用复数;同时,for two hours说明动作在这段时间内一直持续,用现在完成进行时。
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