The policeman kept his eyes on the screen of the puter to identify the criminal's footprints.
A. fixing
B. fixed
C. to fix
D. being fixed
网友回答
A. fixing
(答案→)B. fixed
C. to fix
D. being fixed
解析:考查过去分词做宾语补足语:句意:警察一直注视着电脑屏幕,来识别罪犯的脚印。这里用的是“Keep+宾语+宾语补足语”的结构,因为“注视”是fix one’s eyes on,所以eyes和fix是被动关系,用过去分词做宾语补足语,选B。