Eric and I ... playing tennis.
Eric and I are playing tennis.
Denis is ... volleyball.
Denis is playing volleyball.
Jenny ... doing yoga.
Jenny is doing yoga.
We ... playing tennis, we are playing soccer.
We aren't playing tennis, we are playing soccer.
Helen is ... aerobics.
Helen is doing aerobics.
I am ... a bicycle.
I am riding a bicycle.
... she swimming?
Is she swimming?
I ... shopping in the mall. That's my cardio.
I am shopping in the mall. That's my cardio.
... we jogging?
are we jogging?
Charles ... running from the police.
Charles is running from the police.