【题目】During the opening ceremony, “Miss smile” has won the hearts of Chinese Internet users after being caught _________ the same smile for nearly 20minutes.
A. fixed B. to be fixed
C. to fix D. fixing
在线课程【答案】D
【解析】本题考查非谓语动词。be caught doing被碰上、撞见或发现某人做某事，固定用法。故选D。