关于each的小问题

steven90chen

今天自己总结知识点，看到each，every的用法，无意看到朗文字典上的一个例子：
each        and every        are usually followed by a singular pronoun or determiner (he, she, it, his, himself etc)• Each component can be replaced separately if itbreaks.• Every woman must decide for herself.But you can use 'they', 'them', 'their' etc when you do not want to say whether people are male or female• Every child has their        own room.
请问这个用法在gmat看来算什么？例外？还是错误呢？

AMBER513

看一下！