Question

一What did he want to know，John?
一        that we could finish our work．

1. A.
   What it was
2. B.
   When was it
3. C.
   When it was
4. D.
   What was it

Answer 1

C
根据句意可知他想知道我们什么时候完成工作，又因此句为陈述句所以答案为C。