Look at his look. It seems as if he had met a tiger.A. frightened frighteningB. frighteni

问题补充：

Look at his look. It seems as if he had met a tiger.

A. frightened, frightening

B. frightening , frightened

C. frightened, frightened

D. frightening , frightening

答案：

(答案→)A. frightened, frightening

B. frightening , frightened

C. frightened, frightened

D. frightening , frightening

解析：词义辨析。Frightened害怕的，受惊的，指人；frightening令人恐惧的，指物；句意：看他害怕的表情。好像他遇到令人恐怖的老虎。结合语境可知前文指人，下文只动物，故选A。