In the dream Peter saw himself by a fierce wolf, and he woke suddenly with a start.
A. chased
B. to be chased
C. be chased
D. having been chased
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(答案→)A. chased
B. to be chased
C. be chased
D. having been chased
解析：考查过去分词的用法.本道题个人认为较难。另外干扰项也很迷惑。意思说：皮特梦见自己被凶猛的狼抓住了，然后他突然醒过来。既然是抓住了，那么就应该选择过去分词表示完成，并不是正在被抓。所以选择A.其实c选项语法上也没有错，可是太累赘，a足以。