练习册

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    -Have the students started to work on their experiment? -Yes, it . A. has done B. is going to be done C. is being done D. is to be done [解析]选C.由Yes可知.实验已经开始.也就是说实验正在被做.因此用现在进行时的被动语态. 【查看更多】

     

    题目列表(包括答案和解析)

    —Have the students started to work on their experiment?

    —Yes, it ________.

    A．has done

    B．is going to be done

    C．is to be done

    D．is being done

     

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    —Have the students started to work on their experiment?

    —Yes, it ________.

    A．has done

    B．is going to be done

    C．is to be done

    D．is being done

     

    查看答案和解析>>

    —Have the students started to work on their experiment?

    —Yes, it ________.

    [　　]

    A．has done
    B．is going to be done
    C．is being done
    D．is to be done

    查看答案和解析>>

    －Have the students started to work on their experiment?

    －Yes, it ________．

    [　　]
    A．

    has done

    B．

    is going to be done

    C．

    is being done

    D．

    is to be done

    查看答案和解析>>


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