Question

People in Korea       bow when they meet for the first time.
A、are suppose to               B、supposed to          C、are supposed to

Answer 1

C

试题分析：句意：当朝鲜人第一次见面的时候，他们应该鞠躬。are supposed to do sth 应该做某事，理应做某事，固定短语，故选C。