I can't remember__________ you started doing the work.A.that it was when B.when it was that C.when was it thatD.that was it when 正确答案是B,为什么答案不是C?

I can't remember__________ you started doing the work.
A.that it was when B.when it was that C.when was it that
D.that was it when 正确答案是B,为什么答案不是C?

因为when在这里引导的是宾语从句,用陈述语序,it was that 是强调句型,多读些,增强语感就不会错了,希望能够帮到你.

因为 it 要在 be动词 的前面~

因为when在这里引导的是宾语从句，要用陈述语序

B
用陈述句语序

从句中的语序为一般句

步骤：
It was ...that you started doing the work.
When was it that you started doing the work?
when it was that you started doing the work.