Are you picking shells?
No, I'm not.
Are you picking flowers?
Yes, I am.
Are you drinking milk?
No, I'm not.
Are you drinking orange juice?
Yes, I am.
Are you sailing a big boat?
No, I'm not.
Are you sailing a small boat?
Yes, I am.
Are you eating an apple?
No, I'm not.
Are you eating a pizza?
Yes, I am
Are you riding an elephant?
No, I'm not
Are you riding a bike?
Yes, I am
Are you swimming in the river?
No, I'm not
Are you swimming in the ocean?
Yes, I am
Are you skiing?
No, I'm not
Are you skating?
Yes, I am
Are you writing an e-mail?
No, I'm not
Are you doing your homework?
Yes, I am.