问题补充:
She was so angry and spoke so fast that none of us understood he said meant.
A. that
B. what
C. that that
D. what what
答案:
A. that
B. what
C. that that
(答案→)D. what what
解析:第一个what 用作动词 meant 的宾语,第二个what 用作动词 said 的宾语,即在 none of us understood what what he said meant 中,none of us understood 为主句,what what he said meant 为宾语从句,而在此宾语从句中又包括有 what he said 这样一个主语从句。