People a monument to honour those people who devoted their lives to their country.
A. set out
B. set down
C. set up
D. set on
网友回答
A. set out
B. set down
(答案→)C. set up
D. set on
解析：动词词义辨析题。人们建立纪念碑为纪念那些为国捐躯的英雄们。A. set out 出发 B. set down 着陆 C. set up 建立 D. set on 袭击 根据语境选C