The look on his face suggested that what the monitor said was .A. puzzling; puzzledB. puz

问题补充：

The look on his face suggested that what the monitor said was .

A. puzzling; puzzled

B. puzzled; puzzled

C. puzzled; puzzling

D. puzzling; puzzling

答案：

A. puzzling; puzzled

B. puzzled; puzzled

(答案→)C. puzzled; puzzling

D. puzzling; puzzling

解析：考查puzzled与puzzling的区别，puzzled 感到困惑的，修饰人或与人有关的眼神、嗓音、表情等等，puzzling 令人困惑的，修饰物，句意：他脸上困惑的表情暗示了班长所说的话令人困惑。故选C。