◎ 题干
The students were ________ over the ________ problem,listening to the teacher with a ________ expression on their faces.
A.puzzled;puzzling;puzzlingB.puzzled;puzzling;puzzled
C.puzzling;puzzling;puzzledD.puzzling;puzzled;puzzling
◎ 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“The students were ________ over the ________ problem,listening to the teacher with a ________ expression on their faces.A.puzzled;puzzling;puzzlingB.puzzled;…”主要考查了你对  【形容词的比较级】【形容词的最高级】【形容词的排序】【形容词】  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。