The Browns went to the country for two weekends as they ________ to the office on Sunday.

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I have been writing the report for 3 hours. I ________ it half an hour ago.

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A．ought finish

B．ought to finish

C．ought have finished

D．ought to have finished

You ________ go there if you don't want to.

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He was so good a swimmer that he ________ swim to the river bank when the boat sank.

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There was plenty of time. We ________.

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A．mustn't have hurried

B．couldn't have hurried

C．mustn't hurry

D．needn’t have hurried

—I can't understand why our boss is late.

—He ________ the early bus.

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Her brother ________ be at home now, because he was seen playing basketball in the stadium just now.

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So many mistakes in your homework! You ________ more careful.

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Jane ________ have come to the party, but she ________ not find the exact time.

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He ought ________ have done so even though possible.

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