The UN should﹍﹍the establishment of Iraqi government after the war, I think.
A. take part in
B. play a leading role in
C. play a role among
D. play a important part for
网友回答
A. take part in
(答案→)B. play a leading role in
C. play a role among
D. play a important part for
解析：选B。本句表示的意思应该是：联合国应该在伊拉克政府重建上起领导作用。play a role in为固定搭配意为“在……中起作用。”