. The look on his face suggested that it was he who had broken into the house.A. frightB.

问题补充：

. The look on his face suggested that it was he who had broken into the house.

A. fright

B. frightened

C. frighten

D. frightening

答案：

(答案→)A. fright

B. frightened

C. frighten

D. frightening

解析：考查词形变化。fright 名词，害怕frightened 形容词，害怕的，frighten 动词，使害怕，frightening 形容词，令人害怕的，句意：他脸上害怕的表情表明就是他闯入了房子。根据语境应用名词，所以选A。