◎ 题干
The students were ____ over the ____ problem,  listening to the teacher with a ____ expression
on theirfaces.     
[     ]
A. puzzled; puzzling; puzzling      
B. puzzled; puzzling; puzzled      
C. puzzling; puzzling; puzzled      
D. 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 theirfaces.[ ]A. puzzled; puzzling; puzzlingB. puzzled; puzzl…”主要考查了你对  【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。