问题补充:
The discovery of the stolen car led to.
A. the thief having caught
B. the thief catching
C. the thief being caught
D. the thief to be caught
答案:
A. the thief having caught
B. the thief catching
(答案→)C. the thief being caught
D. the thief to be caught
解析:the thief与catch之间是被动关系,故用现在分词的被动式。