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科目： 來源：不詳 題型：單選題

The doctors are doing all that they _____, but the old man is still not breathing properly.
A．shallB．needC．mayD．can

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科目： 來源：不詳 題型：單選題

—May I smoke here?    —If you _____, choose a seat in the smoking section.
A．shouldB．couldC．mayD．must

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科目： 來源：不詳 題型：單選題

I was really anxious about you. You____ home without a word.
A．mustn’t leaveB．shouldn’t have leftC．couldn’t have leftD．needn’t leave

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科目： 來源：不詳 題型：單選題

A giant of a man was standing in the doorway. His face was almost completely hidden by a long and untidy hair and a wild beard, but you ______ make out his eyes, shining like black beetles under all the hair.
A．mightB．couldC．shouldD．would

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科目： 來源：不詳 題型：單選題

David, you _____play with the valuable bottle; you_______ break it.
A．won’t; can’t B．mustn’t; may
C．shouldn’t; must D．can’t; shouldn’t

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科目： 來源：不詳 題型：單選題

---- May I smoke here?
--- If you      , choose a seat in the smoking section.
A．shouldB．couldC．mustD．may

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科目： 來源：不詳 題型：單選題

–When can I get the result of the test, sir?
–You ____ have it next Friday.
A．couldB．shallC．mustD．may

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科目： 來源：不詳 題型：單選題

—How is the debate of your essay?
—It ____ well, but I ____one of the key points.
A．might work; hadn’t forgotB．needn’t have worked; forgot
C．could have worked; forgotD．would work; hadn’t forgot

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科目： 來源：不詳 題型：單選題

Whale beachings（擱淺）_______ be caused by factors such as illness, or disorientation（迷失方向）caused by extra noise in the oceans, ______ shipping or oil and gas drilling.
A．might; fromB．will; byC．should; inD．shall; on

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科目： 來源：不詳 題型：單選題

If you _____ leave early on weekdays, do it quietly. The other classmates are also dying to have an early leave.
A．canB．mustC．shouldD．may

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