【题目】Seeing a stranger with a knife in his hand, the little girl stood under the tree, ________ out of her mind.
A. frightenedB. be frightened
C. to be frightenedD. frightening
在线课程【答案】A
【解析】
试题分析：考查非谓语动词。句意：看到一个陌生人手里拿着一把刀，小女孩站在树下，吓了一跳。此处指的是小女孩被吓到，用过去分词表示被动。故选A项。