第1个回答 2014-05-16
did you finish your homework at seven o'clock? 先前那个人回答错了,应用过去时态才对!
第2个回答 2014-05-16
Do you finsh your homework at seven o'clock?
第3个回答 2014-05-16
We finished our homework at seven o'clock.
Did you finish your homework at seven o'clock?