Ex.1
1. We're studying for our exams.
2. We're eating dinner.
3. You're wearing white trainers.
4. I'm chatting to Peter.
5. She's writing an email to Chris.
6. He's riding a horse.
Ex.2
1. We aren't studying for our exams.
2. We aren't eating dinner.
3. You aren't wearing white trainers.
4. I'm not chatting to Peter.
5. She isn't writing an email to Chris.
6. He isn't riding a horse.
