◎ 题干
When I entered the room, I found a little boy _____ on his mother's knees _____ to draw a picture.
[     ]
A. seated; learning
B. sitting; to learn
C. seating; learning
D. sat; was learning
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“When I entered the room, I found a little boy _____ on his mother's knees _____ to draw a picture. [ ]A. seated; learning B. sitting; to learn C. seating;…”主要考查了你对  【现在分词】【过去分词】  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。