They - wear jackets (?)
Are they wearing a jacket?
He - drink juice
He is drinking juice
He - dance - now
He is dancing now.
We - sing
We are singing
I - sleep (?)
Am I sleeping?
She - laugh (?)
Is she laughing?
I - go to school (not)
I am not going to school
She - run (not)
She isn't running
They - sit (not)
They aren't/are not sitting
He - play
He is playing
I - study
I am studying
He - eat (?)
Is he eating?
They - do homework (?)
Are they doing homework?
They - swim
They are swimming
It - have dinner (not)
It is not having dinner
I - dance (not)
I am not dancing