问题补充:
Seeing a stranger with a knife in his hand, the little girl stood under the tree, out of her mind.
A. frightened
B. be frightened
C. to be frightened
D. frightening
答案:
(答案→)A. frightened
B. be frightened
C. to be frightened
D. frightening
解析:考查分词用法。本题中的frightened感到害怕的;用形容词短语frightened out of her mind修饰主语the little girl.句意:看到一个陌生人手里拿着刀,那个小女孩站在树下,脑海中非常害怕。故A正确。