◎ 题干
They were all so tired that they could ______.
[     ]
A. do nothing but sleep
B. do anything but sleep
C. do nothing but to sleep
D. do anything but to sleep
◎ 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“They were all so tired that they could ______. [ ]A. do nothing but sleepB. do anything but sleep C. do nothing but to sleep D. do anything but to sleep …”主要考查了你对  【不定代词】【情态动词】  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。