The girl looked at me with a expression. Maybe the problem was quite .A. puzzling; puzzlin

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A. puzzling; puzzling
B. puzzling; puzzled
C. puzzled; puzzled
(答案→)D. puzzled; puzzling
解析：考查形容词辨析。以ing结尾的形容词修饰物；以ed结尾的形容词修饰人。句意“那个女孩用一种疑惑的表情看着我。问题或许非常的令人疑惑。”expression“表情”，指人，problem是物。故选D。