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    ( ). Must the trees be planted at once ? No ,they . A. mustn’t . B. must . C . need . D. need .n’t 【查看更多】

     

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    —________I do the laundry first, Mum?

    —No, you ________. You can do your homework first.

    A．Must; mustn’t     B．Can; mustn’t      C．Must; needn’t     D．May; needn’t

     

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    --The man in a black suit _______ be our youth worker.
    --- I’m sure it _______ be him. I saw him in the laboratory building some minutes ago.

    A．must; can’t B．can; mustn’t C．can; couldD．must; won’t

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    — _______ we clean the classroom at once?  

    — No, you _______. You _______ clean it after school.

    A．Must; needn’t; may

    B．Must; mustn’t; can.

    C．Shall; can’t; must

    D．Need; mustn’t; may

     

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    ---________ we clean the classroom at once?

    ---No, you________. You ________clean it after school

    A．Must, needn’t, can

    B．Need, mustn’t ,may

    C．Must, mustn’t, can

    D．Shall, can’t , may

     

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    You can’t put it here. You must ______the right place.

        A. look at          B. look for           C. look down   D. look up

     

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