Look at the book,it's not mine,and it's not yours,so it must be ________ .A.somebody else's

问题描述:

Look at the book,it's not mine,and it's not yours,so it must be ________ .A.somebody else's

物主代词的形式.就跟mine,yours一样.相当于somebody else's book(z这里的else's是所有格形式). 如有不懂可追问.欢迎采纳O(∩_∩)O哈哈~