Having never met with such a problem he felt and didn’t know how to solve it.A. puzzlin

问题补充：

Having never met with such a problem, he felt and didn’t know how to solve it.

A. puzzling; puzzled

B. puzzled; puzzling

C. puzzling; puzzling

D. puzzled; puzzled

答案：

(答案→)A. puzzling; puzzled

B. puzzled; puzzling

C. puzzling; puzzling

D. puzzled; puzzled

解析：这题考察形容词的用法:puzzling”令人困惑的”,修饰物,第二空考察puzzled”感到困惑的”修饰人,句意是:从没遇到过这么困惑的问题,他感到很困惑,不知怎么解决.选A.