◎ 题干
After a 5-year absence, we returned to our mother school, and not until then       it was such a beautiful school.
A.we realizedB.had we realizedC.we had realizedD.did we realize
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“After a 5-year absence, we returned to our mother school, and not until then it was such a beautiful school. A.we realizedB.had we realizedC.we had realizedD.di…”主要考查了你对  【全部倒装】【部分倒装】【省略句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。