◎ 题干
After retirement, learning a musical instrument may be harder than ______ when you were a kid.
A.it mayB.it wasC.it doesD.it did
◎ 答案
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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 retirement, learning a musical instrument may be harder than ______ when you were a kid.A.it mayB.it wasC.it doesD.it did…”主要考查了你对  【状语从句】【限制性定语从句】【主语从句】【同位语从句】  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。