问题
选择题
We can find out ________ all the excitement is about by playing QQ's “Happy Farm”．
A．that
B．how
C．what
D．when
答案
答案：C
C 考察宾语从句的连接词。Find out后面的宾语从句缺少about的宾语，而单纯的连接词that在名词性从句不做成分，when和where又只能做状语。故使用what。