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科目： 來源：不詳 題型：單選題

It             be the vocabulary that caused you the problem in the exercise because you know a lot of words.
A．couldn’t B．mayC．should D．needn’t

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科目： 來源：不詳 題型：單選題

—I heard they went skiing in the mountains last winter.
—It       true because there was little snow there.
A．may be notB．won’t beC．couldn’t beD．mustn’t be

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科目： 來源：不詳 題型：單選題

—Who bought you the fresh flower?
—It’s from my girlfriend, if you ______ know.
A．have toB．mustC．willD．might

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科目： 來源：不詳 題型：單選題

I ________ use a clock to wake me up because at six o’clock each morning the train comes by my house.
A．mustn’tB．needn’tC．shouldn’tD．couldn’t

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科目： 來源：不詳 題型：單選題

She was greatly shocked at the scene before her eyes. Never did she expect that the local conditions ______ be so awful.
A．couldB．shouldC．wouldD．might

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科目： 來源：不詳 題型：單選題

She is a quiet girl at school，but sometimes she _____ be very naughty.
A．shouldB．wouldC．willD．can

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科目： 來源：不詳 題型：單選題

---who______it be that is knocking at the door?
---It_______be Father, but I’m not sure.
A．can, mustB．can, mayC．must, canD．may, must

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科目： 來源：不詳 題型：單選題

Whether dying patients      be helped to end their lives is a tough moral question.
A．must B．shouldC．mightD．would

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科目： 來源：不詳 題型：單選題

My computer ____start, no matter how hard I try.
-lt might have crashed.
A．won'tB．shouldn'tC．mustn'tD．wouldn't

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科目： 來源：不詳 題型：單選題

According to the latest study，most traffic accidents     be prevented if drivers are careful enough．
A．mustB．canC．have toD．need

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