Ex.4
1. Could Pawel swim? No, he couldn't.
2. Could Alan and Eva cook? Yes, they could.
3. Could the boys open the front door? No, they couldn't.
4. Could Mum play the piano? Yes, she could.
Ex.5
1. I watched TV.
2. You didn't chat online.
3. The dog didn't want a bath.
4. We liked the pizza.
5. They didn't play tennis.
