求分析高考英语题一道.
问题描述：
求分析高考英语题一道.
Please put these laptops on the shelf by _____ . Don't mix them with others.
A.ourselves B.themselves C.itself D.oneself
正确答案是B
求这句句子的翻译和原因.
答
请把这些手提电脑（单独）放在架子上,别和其他的混了