题目内容
We_______on this project for four hours. Let’s have a rest.
A. are working B. have been working C. worked D. had worked
B
解析:
考查动词时态。句意为：“我们四个小时一直做这个项目。让我们休息一下吧”，剧中出现for four hours这个时间状语，可以判断出使用现在完成时，根据句意又可知动作在持续进行当中，所以用现在完成进行时，故选B。
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