When you lose your way in the city you canthe policemen　help.A. look; for B. find; out C.

问题补充：

When you lose your way in the city, you canthe policemenhelp.

A. look; for B. find; out C. tell; to D. ask; for

答案：

(答案→)

解析：固定句型结构ask sb for help表示向某人寻求帮助。