1. - Did he skate in the park ?
- Yes, he did . He skated in the park.
2. - Did he go to the park ?
- Yes , he did. He went to the park.
3. - Did he go to skate in the park ?
- Yes, he did. He went to skate in the park.
4. - Was he in the park ?
- Yes , he was. He was in the park.
5. - Were they in the park ?
- Yes, they were . They were in the park.