2. We aren't doing an exam. We are working in groups.
3. They aren't playing tennis.They are playing volleyball.
4.She isn't working. She is writing a letter.
5. He isn't walking. He is sitting on the bus.
6.You aren't studing for tour exams. You are surfing the internet.
7.You aren't listening to me. You are looking out of(остальное в кадр не попало).