◎ 题干
He has done ______ to improve his English.
[     ]
A. something useful
B. anything useful
C. useful nothing
D. useful anything
◎ 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“He has done ______ to improve his English. [ ]A. something useful B. anything useful C. useful nothing D. useful anything …”主要考查了你对  【不定代词】  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。