问题补充：
The girl looked at me with a expression. Maybe the problem was quite .
A. puzzled; puzzling
B. puzzling; puzzled
C. puzzled; puzzled
D. puzzling; puzzling
答案：
(答案→)A. puzzled; puzzling
B. puzzling; puzzled
C. puzzled; puzzled
D. puzzling; puzzling
解析：句意：这个女孩用迷惑不解的表情看着我。也许这个问题很令人困惑。puzzled感到迷惑的，修饰人或expression，voice; puzzling 令人困惑的，修饰事物。第一空修饰expression因此用 puzzled。第二空修饰the problem，因此用puzzling。故选A。
