练习册

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    9．The book was written in 1946, since when the education system great changes. A．witnessed B．has witnessed C．had seen D．saw 答案:B 解析:解决该题的关键在于时间状语 since when 即 since 1946“自从1946年 .由此可知句子用现在完成时态. 【查看更多】

     

    题目列表(包括答案和解析)

    The book was written in 1946, _______ the education system has witnessed great changes.

    A．since then         B．when             C．since when        D．during which

     

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    The book was written in 1946, ____ the education system has witnessed great changes.

    A．when

    B．during which

    C．since then

    D．since when

     

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    The book was written in 1946, ____ the education system has witnessed great changes.

    A．when        B． during which        C． since when         D． since then

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    The book was written in 1946,_______ the education system has witnessed great changes.

    A．when   B．during which   C．since then   D．since when  

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    The book was written in 1946, ____ the education system has witnessed great changes.

    A．whenB．during whichC．since thenD．since when

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