题目

1.Research findings show wo spend about two hours dreaming every night,no matter what we __D__ during the day.
A.should have done B.would have done
C.must have done D.may have done
2.A bicycle __A__ by electric power,which does good to the environment,becomes quite popular in our city.
A.driven B.being driven C.to be driven D.is driven

提问时间：2020-10-18

答案

1 A带有责备意 是指本应该做却没做 后悔 B“would+have+done”虚拟语气,表示对过去事情的假设,意思是“本来会做”. C must have done表示对已发生的事情的推测. D may/might have done表示对过去某事可能性...