问题补充:
Anyone trying to take knives on board flights would be caught by the police.
A. finds
B. being found
C. found
D. will find
答案:
A. finds
B. being found
(答案→)C. found
D. will find
解析:考查非谓语动词。A、D两项构成谓语,过去分词表被动,为find sb. doing sth.的被动式。句意:被发现试图带刀具登机的任何人将会被警察抓获。故C正确。