—What makes her so frightened?
—Oh,it is the mouse that she on her bed while looking for her watch.
A. came about
B. came across
C. came through
D. came up
网友回答
A. came about
(答案→)B. came across
C. came through
D. came up
解析：考查短语动词的区别。e out“发生”；came across“发现，偶遇”；e through“度过，(电话)打通”；e up“被提出，发生”。