We found the students seated at tables and had their eyes on the scene of the launch of Shenzhou V spaceship.
A. fixed
B. fix
C. fixing
D. to fix
网友回答
(答案→)A. fixed
B. fix
C. fixing
D. to fix
解析：fix one’s eyes/attention on/upon为固定短语,意为“注视,注意”,故此处应用过去分词形式作宾语补足语。