问题补充:
is known to us all is that the Olympic Games will take place in Beijing.
A. It
B. What
C. As
D. Which
答案:
A. It
B. What
C. As
D. Which
解析:解析分析题干结构“is known to us all”是主语从句,从句中缺少主语,what引导主语从句,在从句中作主语。如果选it,需去掉all后的is;如果选as;需去掉is that。
【标签】(08福建27)