题目内容：

He walked with his eyes ____ his book.
(A) fixing (B) fixed
并说明原因,
横线后面漏了on

优质解答

B.
with+n.+非谓语动词（如不定式,完成时等）是独立主格结构,作状语,非谓语动词主动还是被动由with后面的名词与它的关系决定,
因为eyes是被人fix on his book,所以eyes be fixed on his book.