最好是说明为什么啊!小弟感激不尽啊!
问题描述：
最好是说明为什么啊!小弟感激不尽啊!
--on ten years of obsercation and study,he announced that everyone dreams every night,whether they realise it or not.A.based B.basing C.been based D.having based
答
A be based on 的意思是建基础于...之上.在这是非谓语动词,所以用based就可以了.