2. 学历类
  3. Research findings show we spend about tw

Research findings show we spend about tw

最全题库2022-08-02  16
问题 Research findings show we spend about two hours dreaming every night,no matter what we（ ）during the day.A.should have doneB.would have doneC.may have doneD.must have done
选项 A.should have done
B.would have done
C.may have done
D.must have done
答案 C
解析 该题考查情态动词用法。本题包含宾语从句，从句的谓语动词为陈述句语气，因此可将表示虚拟语气的A、B选项排除,must have done表示对过去肯定推测不合题意，故答案为C。
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