The UN is an important international organization helps many people around the world.
A. who
B. that
C. where
D. /
网友回答
A. who
(答案→)B. that
C. where
D. /
解析：考察从句连词的选择。根据句子结构可知，该句为定语从句，修饰的是先行词organization，先行词在从句中作helps 的主语，指物，所以选择B，who只能代指人，where作状语 先行词作宾语时才可以省略