Nobody knows for sure how dinosaurs died out 65,000,000 years ago. It _______ be
题型:不详难度:来源:
Nobody knows for sure how dinosaurs died out 65,000,000 years ago. It _______ because of sudden changes of their living conditions.A.must have happened | B.would have happened | C.should have happened | D.might have happened |
|
答案
D |
解析
试题分析:句意:没有人确切的知道56,000,000年前是怎么死的。有可能是因为它们生活环境的突然的改变。因为是Nobody knows,所以只是对过去的不确定的推测,用might have done过去可能做了…,must havedone过去一定做了,should have done过去本应该做...would have done过去本来会做…,选D。 |
举一反三
---- ________ you spoil everything, Kevin? ---- Please don’t get me wrong. I just want to help and I am a good man and I …. |
Cheating is strictly forbidden in this important exam, and students ______ bring any reference books into their classrooms, cell phones included.A.will not | B.should not | C.mustn’t | D.need not |
|
– Amazing! You _____ have won the first prize in the national English speech contest! – I’m lucky that all my efforts have finally paid off. |
-- I can’t believe that Jeff _______ have quarreled and fought with his boss. -- Well, if one _______ ask for trouble, it just can’t be helped.A.would; will | B.must; may | C.should; must | D.need; dare |
|
—Send me an email when you are free, will you? —________.A.I must | B.I will | C.I can | D.I should |
|
最新试题
热门考点