The committee over the problem among themselves for two hours. A. has argued B. has been arguingC. have argued D. have been arguing 题目和参考答案——青夏教育精英家教网——

题目内容

The committee __ over the problem among themselves for two hours.

A. has argued B. has been arguing

C. have argued D. have been arguing

D

【解析】

试题分析：本题的关键词是后面的时间状语for two hours，该时间状语常常和现在完成时，或者现在完成进行时连用。表示动作从过去发生一直持续到现在，而且还在发生。句义：在两个小时里，委员会一直都在讨论做过问题。现在完成进行时强调动作的持续性。故D正确。

考点：考察时态

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