—You ought to have made an apology to Tom yesterday evening．—Yes, I know I __

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—You ought to have made an apology to Tom yesterday evening．
—Yes, I know I __ __．

A．ought to have

B．have to

C．should

D．must have

答案

解析

考查情态动词。Should have done =" ought" to have done本应该做某事而实际上没有做。句意：昨天晚上你本应该向汤姆道歉的。是的，我知道我本应该向他道歉。所以选A，ought to have后省略了made an apology to him。

举一反三

"They didn’t take measures in time, otherwise the explosions ____．"some experts said．

A．wouldn’t happen	B．didn’t happen
C．wouldn’t have happened	D．mustn’t have happened

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It was playing computer games that cost the boy plenty of time that he ______ spent doing his lessons.

A．might have	B．should
C．ought to have	D．could

题型：不详难度：| 查看答案

If you were to do it,the result______different.

A．will be

B．would be

C．should be

D．would have been

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I really don’t know how to express my thanks to Mr. Li, my high school English teacher, without whose help I__________ to college that year.

A．weren’t to go	B．hadn’t been able to go
C．couldn’t go	D．couldn’t have gone

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It is often recommended that children ________chances to get close to nature.

A．are offered

B．be offered

C．should offer

D．must be offered

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