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7．Since you are here, you ____ as well stay here for long.
A．canB．mayC．mustD．Should

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8．Without your kind help, we ______ in the experiment.
A．cannot succeed B．hadn’t succeeded
C．w ouldn’t succeedD．couldn’t have succeeded

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25. – _____ we take a rest? I can’t go any further.
– You _____ be tired — we’ve only walked for 20 minutes!
A．May; mustn’t B．Shall; can’tC．Can; may not D．Should; wouldn’t

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29. If you ______ go, at least wait until the rain stops.
A．canB．mustC．should D．Would

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35. The plant is dead. I ______it more water.
A．will giveB．would have beenC．must giveD．should have given

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22. Eric _________ go camping with us this Sunday, but he isn’t quite sure yet.
A．mayB．ShallC．mustD．Can

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23. Often he _________ sit for hours doing nothing at all when he was in low spirits.
A．shouldB．wouldC．mightD．Could

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26. －Hello, Mr. Wang. Must we wear the school uniform tomorrow?
－You ___________. Only on Mondays. Tomorrow is Tuesday.
A．don’t have toB．mustn’t C．have toD．Must

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31. They demanded that the books    __to the school library at once.
A．returnB．should returnC．be returnedD．would be returned

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24．The purpose of education _____ be to provide students with a value system----not to prepare them for a specific job.
A．willB．shouldC．couldD．May

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