Răspuns:
1. They're not learning their lesson at school.
2. I'm not eating a pear.
3. We're not helping Nick.
4. The boys aren't playing football.
5. We're not drinking coffee.
6. The cat isn't sleeping near the door.
7. I'm not reading a novel.
8. The pupils aren't writing an exercise.
9. Alice isn't wearing a white dress today.
10. They aren't swimming in the sea.
11. He's not carrying an umbrella.