－My goodness! We have missed the flight.

－We it ________, but we were caught in the traffic jam.

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The pilot kept calm in the terrible storm, otherwise the accident ________.

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A．couldn't be prevented

B．mustn't have prevented

C．wouldn't have been prevented

D．shouldn't prevent

－What was he before?

－He was ________ medical worker before he turned ________ writer.

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That young man has made so much noise that he ________ not have been allowed to attend the concert.

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－Isn't it surprising that such a good football team ________ have failed to enter the World Cup Final?

－Yes, anything is possible on the football field.

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As is natural, a man as old as he ________ be very forgetful.

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You ________ pay too much attention to your reading skill, as it is so important.

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I lived with my sister this summer and didn't have to pay rent. So I ________ save most of my salary.

[　　]

His homework ________, but it

[　　]

A．needs correcting; needn't rewriting

B．need be corrected; doesn't need to be rewriting

C．needs correcting; needn't be rewritten

D．needs to be corrected; needn't to be rewritten

He ________ without saying good-bye to them, for he always has good manners.

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