people are puzzeled_they read the book Athe first time Bat the first time Cfor the first time

问题描述:

people are puzzeled_they read the book Athe first time Bat the first time Cfor the first time
选哪个,为什么

选A,作定语从句用,具体怎麼讲还真不好说,记下就行了,就是这样用的.