When the policeman stopped us we all looked questioningly at him .A. nervously and puzz

问题补充：

When the policeman stopped us, we all looked questioningly at him, .

A. nervously and puzzled

B. nervous and puzzling

C. nervous and puzzled

D. nervously and puzzling

答案：

A. nervously and puzzled

B. nervous and puzzling

(答案→)C. nervous and puzzled

D. nervously and puzzling

解析：C考查形容词作状语。此处为形容词作伴随状语，所以选C项。