give him a lot of papers,and he will take some of （ ） that it them those 选一个,为什么?
问题描述：
give him a lot of papers,and he will take some of （ ） that it them those 选一个,为什么?
答
Give him a lot of papers, and he will take some of 【them】
给他一些文件,他会拿走其中一些.
some of 后接的词是指代前面的a lot of papers,复数形式.
另外those后面一般需要接可数名词复数,不符合
所以选them