Research findings show we spend about two hours dreaming every night, no matter what we ______during the day.

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问题 Research findings show we spend about two hours dreaming every night, no matter what we ______during the day.

选项 A、should have done
B、would have done
C、must have done
D、may have done

答案D

解析 句意:调查发现,不管我们白天可能做了什么事,我们每天晚上都会有两个小时在做梦。may have done表示“(不管我们白天)可能做了些什么”,符合句意。shouldhave done本该做(但实际未做)。would have done表示与过去相反的假设。must havedone是对已发生的情况作肯定推测。
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