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
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
B，直接把整个句子倒过来看，he announced that everyone dreams every night basing on ten years of……………………，不要想得太复杂，其实很简单，呵呵
答
我蒙的，首先看选项，四个有3个based，排除B，接着排A，过去式肯定不对，CD选一个，我会选D，过去分词用在前面看着就不爽。我英语语法很菜，不知道蒙的对不对
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.
答
c