The programme was so exciting that the children kept their eyes on the screen.
A. to fix
B. fixed
C. to be fixed
D. fixing
网友回答
A. to fix
(答案→)B. fixed
C. to be fixed
D. fixing
解析：句意，这个节目如此激动人心以致于孩子们全神贯注看着屏幕。fix one's eyes on ...表示注意看...，eyes提到动词fix前面，两者形成被动关系，故fix应用过去分词。