they got such a fright.they were ___A so frightful B such frightened C so frightened D such fright .A为什么不可以 .为什么是C
问题描述：
they got such a fright.they were ___
A so frightful B such frightened C so frightened D such fright
.A为什么不可以 .为什么是C
答
个人觉得 frightful 主语为事情或东西， frightened 主语是人。
答
frightful 表示可怕的；惊人的；令人毛骨悚然的；讨厌的，丑恶的，是让别人感到
但是文中是他们自己感到害怕所以选frightened 表示自己受到惊吓
答
因为-ed结尾的形容词表示人自身感到怎样
而-ful,-ing结尾的形容词表示物令人感到怎样
所以选C
答
so frightful 意思是是充满恐惧
C是被惊吓 所以选C