---Why was the young lady taken away by the police?
---- She happened something in the supermarket.
A. to catch stealing
B. to catch to steal
C. to be caught stealing
D. to be caught to steal
网友回答
A. to catch stealing
B. to catch to steal
(答案→)C. to be caught stealing
D. to be caught to steal
解析：考查非谓语动词。happen to do碰巧做某事，又因为“被抓住”故排除A和B；be caught doing sth, 故答案为C。