both of them,both of the two books这些短句中的of是否都可省略?

both of them,both of the two books这些短句中的of是否都可省略? both of them翻译 both of them与both of whom both them还是both of them?为什么? The old man has two sons,__are lawyers.A.both of them B.both both of you two是否正确 1.You can buy either of the two books.2.You can buy both of Both of my parents中的of可以省略吗? I have two bikes; ___ are broken.A.all of them B.both of the 1.Both of them are_______. Both of them a student both of them both them both of their parents both their pare