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：puzzled困惑的，主语是人， puzzling令人迷惑的，主语是物，根据题意，前面逻辑主语是人，后文主语是problem，问题，故选A。
