5. —How did you find your sister in such a big and strange city?
—I her in the railway station when I was looking for the police for help .
A. came about
B. came out
C. came up
D. came across
网友回答
A. came about
B. came out
C. came up
(答案→)D. came across
解析：可联系客服索取此答案。