Tina _____ have known the truth, or she would have told us.A．mustn"tB．shouldn"t

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Tina _____ have known the truth, or she would have told us.

A．mustn"t

B．shouldn"t

C．can"t

D．needn"t

答案

解析

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举一反三

You ____ him so closely; you should have kept your distance.

A．shouldn"t follow	B．mustn"t follow
C．couldn"t have been following	D．shouldn"t have been following

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You look so tired. You______have stayed up late again.

A．should

B．can

C．may

D．must

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You__________the parcel home. The shop would have delivered it if you had asked.

A．needn’t have carried	B．couldn’t have carried
C．mustn’t have carried	D．shouldn’t have carried

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You’d better not phone the manager between 7and 8 tomorrow evening; he _______an
important meeting then.

A．will have	B．would have
C．will be having	D．will have had

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．－May I keep this book for two days?
－No, you_______. It’s a library book for reference only.

A．may not

B．mustn’t

C．needn’t

D．shouldn’t

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