Are Mrs Green and Vicky buying food? No, they arent. Theyre buying clothes
Is Fred riding a bike? No, he isnt. He is driving a car
Is Tom carrying boxes? No, he isnt. He is cleaning windows
Is Tanya playing football? No, she isnt. She is running
Are the birds flying? No, they arent. Theyre sitting
Is the dog eating? No, it isnt. Its sleeping