Our teacher asked if we had already done our homework.We answered we ____.A.did B.done c.had应该是哪个?为什么?

问题描述:

Our teacher asked if we had already done our homework.We answered we ____.A.did B.done c.had
应该是哪个?为什么?

A.did .主句是过去时态

我觉得是C吧