问题补充:
is known to us all that the World Expo took place in Shanghai.
A. It
B. As
C. Which
D. What
答案:
(答案→)A. It
B. As
C. Which
D. What
解析:考查it作为形式主语。真正的主语从句是后面的that the World Expo took place in Shanghai。
时间:2019-09-23 08:49:08
is known to us all that the World Expo took place in Shanghai.
A. It
B. As
C. Which
D. What
(答案→)A. It
B. As
C. Which
D. What
解析:考查it作为形式主语。真正的主语从句是后面的that the World Expo took place in Shanghai。