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We on it for many hours but we have not yet reached any conclusion.A、workB
We on it for many hours but we have not yet reached any conclusion.A、workB
游客
2023-09-25
15
管理
问题
We on it for many hours but we have not yet reached any conclusion.
选项
A、work
B、have been worked
C、have been working
D、are working
答案
C
解析
现在完成进行时表示动作从过去某一时间开始一直延续到现在或离现在不远的时间。本题中表示”好几个小时”以来一直在做某事,因此用现在完成进行时。
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