初二英语题 急!谢谢!

问题描述:

初二英语题 急!谢谢!
1 He has not yet returned.
2 He will return in ten minutes.
3 When the concert ended,we went home.
拿be back替代1、2句中的return;拿be over替代3句中的ended

1 He has not yet been back.
2 He will be back in ten minutes.
3 When the concert was over,we went home.