◎ 题干
---Are you sure you have to do it? It’s been very late.
-----I don’t  know ________I can do it if not now.
A .where           B. why          C. when
◎ 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“---Are you sure you have to do it? It’s been very late.-----I don’t know ________I can do it if not now.A .where B. why C. when…”主要考查了你对  【宾语从句】  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。