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    on duty 值日,值班 on foot 步行;走路 【查看更多】

     

    题目列表(包括答案和解析)

    on duty

    [    ]

    　　A. 值日   B. 负责任   C. 在职责内   D. 在范围内

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    从所给的四个选项中选择最佳答案

    John and Jim come to school very early because they're _______ today.

    [　　]

    A． on duty　　　　　B．in duty

    C． on their duty　　　D．in their duty

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    It's time ________ him ________ on duty.

    [　　]

    A．for, being

    B．for, to be

    C．of, being

    D．of, to be

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    It's time ________ him ________ on duty.

    [　　]

    A．for, being

    B．for, to be

    C．of, being

    D．of, to be

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    The classroom ________ every day by the students on duty.

    [　　]

    A．is cleaning

    B．cleans

    C．is cleaned

    D．are cleaned

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