Question

When asked to explain （___）made hislessons so exciting,the teacher kept silent.

When asked to explain （_ _ _）made hislessons so exciting,the teacher kept silent.
A. what it was that B.that what it was C. what was it that D. that what was it
选什么？

Answer 1

A
强调句在宾语从句中的运用。该句是这样来的。
It was .....that made his lessons so exciting.(中间的.....为被强调部分，假如对此提问）
What was it that made his lessons so exciting?(放在宾语从句中，就是选项A)
理解请采纳！祝你进步！

Answer 2

A. what it was that