问题
选择题
With her eyes the work attentively, she didn't know what was happening outside.
A．fixed on
B．focused
C．fixing on
D．focusing
答案
答案：A
考查分词结构。Fix one’s eyes on…注意力集中于…;eyes与focus构成被动关系，on 也不能省略。句意：因为她的注意力都集中在工作上，她不知道外面发生的事情。