问题补充:
is known to us all is the theme of Shanghai Expo is “Better city, better life”.
A. It; what
B. It; that
C. What; that
D. What; what
答案:
A. It; what
B. It; that
(答案→)C. What; that
D. What; what
解析:考查名词性从句,第一空填what引导主语从句,在主语从句中what做主语,第二空填that,引导表语从句,表语从句是完整的,that不做成分,句意是:我们都知道的是上海世博会的主题是城市,让生活更美好