There was a look on her face when she met with the problem. A. confusing; confusing B.

问题补充：

There was a look on her face when she met with the problem.

A. confusing; confusing

B. confused; confused

C. confusing; confused

D. confused; confusing

答案：

A. confusing; confusing

B. confused; confused

C. confusing; confused

(答案→)D. confused; confusing

解析：句意：当他遇到这个令人困惑的问题时候，他脸上露出了困惑的表情。Confusing令人困惑的；一般修饰物，confused困惑的，一般修饰人和与人有关的面容，表情，眼神等，所以选D。