【题目】He wanted to know made her change her mind at the last minute.
A. what was it that B. that it was what
C. what it was that D. that what it was
在线课程【答案】C
【解析】
考查宾语从句中的强调句。句意：他想知道是什么使她在最后一刻改变了主意。动词know后面是what引导的宾语从句，且作从句的主语，从句中是一个强调句型，强调宾语从句的主语what，故选C。