is today Britain used to be three different countries,and over many years the three countr

发布时间:2020-08-17 02:22:43

    is today Britain used to be three different countries,and over many years the three countries became one.
A,It     B,What      C,Where      D,As

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解析:通过分析句子结构,可知这是一个复合句,其中包含一个主语从句,且引导词在从句中作地点状语,故用Where 。
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