分析一道英语复合句

问题描述:

分析一道英语复合句
_____is known to us all is that the 2008 Olympic Games will take place in Beijing
A,It
B,What
C.As
D,Which
请问这是什么类型的句子啊?为什么要选那个呢?

b罗列用法1 As is known to us,the 2008 Olympic Games will take place in Beijing 2 what is known to us all is that the 2008 Olympic Games will take place in Beijing 3 it is known to us all that the 2008...