◎ 题干
I don't know _____ next.
[     ]
A. what to do it
B. what to do
C. how to do
D. which to do
◎ 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 don't know _____ next. [ ]A. what to do it B. what to do C. how to do D. which to do …”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。