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
网友回答
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