I was very busy last Sunday,.
I was not very busy last Sunday.
Were you busy last Sunday?
Yes I was./ No I wasn't.
They were very busy last Summer.
Were they busy last Summer?
...
I was very busy last Sunday,.
I was not very busy last Sunday.
Were you busy last Sunday?
Yes I was./ No I wasn't.
They were very busy last Summer.
Were they busy last Summer?
...