Past simple
They played football?
They didn't play football.
Did they play football?
Yes, they did.
No, they didn't.
Post progressive
I was playing football
Was I playing football?
Yes, I was.
No, I wasn't.
I wasn't playing football.
They played football?
They didn't play football.
Did they play football?
Yes, they did.
No, they didn't.
Post progressive
I was playing football
Was I playing football?
Yes, I was.
No, I wasn't.
I wasn't playing football.