问题补充:
delighted me most was my son was admitted to Beijing University.
A. That, what
B. That, that
C. What, that
D. What, what
答案:
A. That, what
B. That, that
(答案→)C. What, that
D. What, what
解析:考查名词性从句。第一空用what引导起主语从句what delighted me most,what在句中做主语。第二空用that引导表语从句,that在句中不充当任何成分,只起引导作用。句意:最让我高兴的是我的儿子被北京大学录取了。故C正确。