I_______ such a foolish mistake if I had been a little more careful.A．wouldn’t

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I_______ such a foolish mistake if I had been a little more careful.

A．wouldn’t make	B．wouldn’t have made
C．hadn’t made	D．didn’t make

答案

解析

这道题是一个与过去事实相反的虚拟语气，if条件从句用的是过去完成时态，主句应用would have done 结构。因此答案选B.

举一反三

We ________ such great achievements without your efforts. Thanks a lot.

A．can’t have made	B．couldn’t have made
C．were unable to make	D．are unable to make

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Being examined twice a year，whether it is a car or a bus or a truck，is the rule that every driver _______obey in this city.

A．shall

B．can

C．ought to

D．need

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—How did you do on the test?
—Not so well. I ______much better, but I misread the directions for Part One.

A．could

B．could have done

C．must have done

D．should do

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— “May I speak to your manager Mr. Williams at five o’clock tonight?”
— “I’m sorry. Mr Williams ________ to a conference by then.”

A．will have gone	B．had gone
C．would have gone	D．has gone

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—Sorry indeed. I______ to your birthday party if …
—Forget it. I know you were out on business.

A．must come

B．would come

C．must have come

D．would have come

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