In thisexperiment, they are woken up several times during the night, and asked toreport what they ________.A.had justbeen dreamingB.are justdreamingC.have justbeen dreamingD.had justdreamt
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C解析这里易选错的是D。现在完成进行时强调的是“刚才在做的梦”，而过去完成时强调的是“做过梦”这个事实，而不是做梦的内容，故选择C。