应该选B;
如果是C,就应该这么说:As is known to us all that the 2008 Olympic Games will take place in Beijing.
用it的话就有同样的语法错误.
如果不懂为什么用what可以参照下面这个简单点的句子:What is known is that he's clever.
应该选B;
如果是C,就应该这么说:As is known to us all that the 2008 Olympic Games will take place in Beijing.
用it的话就有同样的语法错误.
如果不懂为什么用what可以参照下面这个简单点的句子:What is known is that he's clever.