◎ 题干
_________, I always feel I want a few more days.
A.However long is a vacationB.However long a vacation is
C.However is a vacation longD.However a vacation is long
◎ 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“_________, I always feel I want a few more days.A.However long is a vacationB.However long a vacation isC.However is a vacation longD.However a vacation is long…”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。