They walked out together._____walked out.A.they both B.they all C.Some of them D.Neither of them

题目

They walked out together._____walked out.A.they both B.they all C.Some of them D.Neither of them
选什么,为什么

答案

　　选A.They both

　　both两个都
　　all（三者或以上或不可数名词）都
　　neither两个都不
　　some of them他/她/它们中的一些