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科目： 來源：不詳 題型：單選題


What would have happened ________, as far as the cliff?
A．if Bob has walked fartherB．if Bob should walk farther
C．if Bob had walked fartherD．if Bob walked farther

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科目： 來源：不詳 題型：單選題


Walking in space _________sound easy, yet great care and skills are required.
A．mayB．shallC．shouldD．must

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科目： 來源：不詳 題型：單選題


The boss has given everyone a special holiday, so we _____ go to work tomorrow.
A．can’tB．mustn’tC．needn’tD．shouldn’t

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科目： 來源：不詳 題型：單選題


There is only one who is capable of setting limits to your growth, and it _____ well be you.
A．mayB．shouldC．willD．must

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科目： 來源：不詳 題型：單選題


—You didn’t go to Europe, why?
—I _____ this morning, but I _____ to Shanghai because of an emergency .
A．was to start; am goingB．was scheduled to start; will go
C．should have started; am goingD．would like to start; will go

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科目： 來源：不詳 題型：單選題


Car lovers often organize field sports in our country. It is an activity that they ______ without the benefits of a car.
A．would never attemptB．will never attempt
C．would never have attemptedD．can never have attempted

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科目： 來源：不詳 題型：單選題


——The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?
——____ Tom have a try?
A．Shall B．CanC．WillD．Need

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科目： 來源：不詳 題型：單選題


No wonder you caught a cold. You________have gone out last night without a coat.
A．shouldn’tB．mustn’t
C．couldn’tD．mightn’t

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科目： 來源：不詳 題型：單選題


He ________ get into his own house because he has lost his keys.
A．mustn’t B．doesn’t have to C．can’t D．needn’t

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科目： 來源：不詳 題型：單選題


Tom, turn down the music. Why    you make such a big noise while your baby sister is sleeping? 
A．must B．wouldC．shouldD．may

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