◎ 题干
Sit down, Emma. You will only make yourself more tired, _____ on your feet.

A. to keep
B. keeping
C. having kept
D. to have kept
◎ 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“Sit down, Emma. You will only make yourself more tired, _____ on your feet. [ ]A. to keepB. keepingC. having kept D. to have kept …”主要考查了你对  【现在分词】  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。