What was she doing yesterday at 2:45?
She was rollerblading.
Was she acting?
Yes, she was.
What were they doing yesterday at 1.15?
They were running races.
Were they telling jokes?
Yes, they were.
What were you doing yesterday at 3.00?
I was trampolining.
Were they running races?
No, they weren't.
Was he drawing pictures?
No, he wasn't.
What was he doing yesterday at 5.00?
He was drawing.