When asked to explain he did to make his students so fascinated with his lessons, the teacher paused and thought deeply.
A. what was it that
B. that what it was
C. what it was that
D. what was it
网友回答
A. what was it that
B. that what it was
(答案→)C. what it was that
D. what was it
解析：考查强调句的特殊问句做宾语从句：强调句的特殊问句结构是：特殊疑问词+is/was+that+其余部分。这里的强调句是做explain的宾语从句，所以语序是陈述句。句意：当被要求解释他做了什么让学生对他的课这么着迷的时候，这个老师停下来沉思。选C。