The photos that won the first prize in the competition will be _____ on the website.
put away
put off
put up
put on
考查动词短语辨析。句意：在比赛中获得一等奖的照片将被张贴在网站上。put off 推迟，延迟；put away 将……收起；put on 穿上；put up 张贴，建造。主语 photos 和动词短语 put up 构成被动关系，“张贴照片”符合句意，故选选项C。