A survey has shown that 40% of those killed in traffic accidents _____ if they h
题型：不详难度：来源：
A survey has shown that 40% of those killed in traffic accidents _____ if they had been wearing seat belts.| A．should have been saved | B．must have been saved | | C．need have been saved | D．could have been saved |
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答案
| D |
解析
试题分析：考查情态动词+完成式的用法：句意：一项调查表明40%的在交通事故中丧生的人如果戴好安全带可能就能得救。用could have done表示“本来可能做却没有”，Should have done本应该做而没有，must have done一定做过…，need have done本需要做却没有做，都不符合句意，选D。 |
举一反三
----- I’m sorry . I ________ at you the other day .
----- Forget it. I was also a bit out of control of myself.| A．shouldn’t shout | B．mustn’t shout | | C．shouldn’t have shouted | D．mustn’t have shouted |
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When we were in the college, we stay in the library, devoting ourselves to books.| A．should | B．would | C．can | D．need |
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– Excuse me, sir. But nobody _____ smoke here in the lift!
-- Sorry! I didn’t see the sign. |
--Why are your eyes so red? You _______ have slept well last night.| A．can"t | B．mustn"t | C．needn"t | D．won"t |
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It __be the vocabulary that caused you the problem in the exercise because you know a lot of words.| A．may | B．couldn’t | C．should | D．needn’t |
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