When the man came in gun in hand we all stood there .A. frightened B. frighteningC. bei

问题补充：

When the man came in, gun in hand, we all stood there, .

A. frightened

B. frightening

C. being frightened

D. having frightened

答案：

(答案→)A. frightened

B. frightening

C. being frightened

D. having frightened

解析：

这题考查形容词做状语的用法，句意是：当那个人进来时，手里拿个枪，我们都站在那，吓傻了。因为是修饰人的，用frightened。选A。