1.My father wasn't free last Sunday.
Was my father free last Sunday?
No,he isn't.
2.They were not at school just now.
Were they at school just now?
No,they weren't.
3.I was not busy yesterday.
Did you busy yesterday?
No,I didn't.
4.I didn't go to the park two days ago.
Did you go to the park two days ago?
No,I didn't.
5.Miss Li didn't teach us English last year.
Did Miss Li teach us English last year?
No,she didn't.
6.We didn't study English yesterday morning.
Did we study English yesterday morning?
No,we didn't.
7.He didn't live in Guilin in 2005.
Did he live in Guilin in 2005?
No,he didn't.
8.He and she didn't do their homework a moment ago.
Did he and she do their homework a moment ago?
No,they didn't.