问题
选择题
The question was so ________ that there was a ________ expression on the teacher's face.
A．puzzled; puzzling
B．puzzled; puzzled
C．puzzling; puzzled
D．puzzling; puzzling
答案
答案：C
题目分析：考查形容词。Puzzled困惑的，不解的; puzzling令人困惑的。句意：问题是如此的令人不解，以至于在老师的脸上带着一副困惑的表情。故C正确。