1.They haven't. Have they?
2.She hasn't.Has she been?
3.They haven't. Have they?
4.I haven't. Have I?
5.He hadn't. Had he?
6.We hadn't. Had we?
7.She hadn't. Had she?
8.The children won't have done. Will the children have done?
9.It won't have stopped. Will it have stopped?