Look! Sue (not / eat) chocolate ice-cream, she (eat) banana ice-cream.
Look! Sue hasn't eaten chocolate ice-cream, she has eaten banana ice-cream.
Look! Sue isn't eating chocolate ice-cream, she is eating banana ice-cream.
Look! Sue didn't eat chocolate ice-cream, she ate banana ice-cream.
Look! Sue doesn't eat chocolate ice-cream, she eats banana ice-cream.