--Must we hand in our homework now?---No, you ___. You ___ hand them in before F
题型：不详难度：来源：
--Must we hand in our homework now?---No, you ___. You ___ hand them in before Friday.| A．mustn’t , can | B．needn’t, can | C．can"t , can | D．mustn’t, must |
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答案
| B |
解析
| must(必须),它的否定形式是needn’t,此处的can表示“可以”. |
举一反三
——What sort of house do you want to have? Something big?
——Well, it be big--that’s not important.| A．mustn’t | B．needn’t | C．can’t | D．won’t |
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She didn"t answer the phone.She ___ be asleep.| A．couldn"t | B．mustn’t | C．might | D．had to |
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He ___ work in Hangzhou, did he?| A．usedn’t | B．didn’t used | C．used to | D．usen’t to |
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—Do you think he will do me a favor?
—As far as I know，he is the last one to help others.He_______be prepared to give you a hand，though.| A．must | B．might | C．can | D．should |
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_______Wale_______at school，he would gain much higher a salary.| A．Had;worked | B．If;worked | | C．Did;work | D．If;has worked |
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