We all know that we ________ our carbon footprint, but I suspect that many peop

We all know that we ________ our carbon footprint, but I suspect that many peop

题型:不详难度:来源:
We all know that we ________ our carbon footprint, but I suspect that many people wouldn"t be prepared to go as far as Joan Pick, a retired scientist living in south London.
A.must have reducedB.should have reduced
C.may have reducedD.could have reduced

答案
B
解析
B 考察情态动词。句义:我们都知道本应该减少碳,但是我怀疑很少有人能够项Joan Pick一样。Must have done表示对过去情况的肯定推测。过去一定…;should have done本应该做某事,实际上却未做。May have done或许…;表示没有太大的把握,根据句义说明B正确。
举一反三
Brain, like muscles, also needs some kind of exercise and nutrition. The more you use your brain in the right direction, the more you ________ enhance your ability.
A.couldB.might
C.shallD.will

题型:不详难度:| 查看答案
—Mum, I"m tired.
—Well, if you ________ go to bed after midnight every night, what do you expect?
A.willB.may
C.shouldD.can

题型:不详难度:| 查看答案
A hot balloon blew up in Egypt. There ________ something wrong with the quality of it.
A.may have beenB.must be
C.need have beenD.might be

题型:不详难度:| 查看答案
—David is often absent from class.
—Tell him he ________ answer for it if he goes on behaving like that.
A.shallB.might
C.wouldD.can

题型:不详难度:| 查看答案
Time ________ heal a broken heart. After five years, Steve seems to have got over the sorrow of losing his son.
A.shouldB.would
C.shallD.can

题型:不详难度:| 查看答案
最新试题
热门考点

超级试练试题库

© 2017-2019 超级试练试题库,All Rights Reserved.