Grammar

1. They / go to the park in the evening. They used to go to the park in the evening. (+)
2. He/read a lot when he was a kid. He used to read a lot when he was a kid. (+)
3. Lucy/chat with her friends a lot when she was 14. Did Lucy use to chat with her friends a lot when she was 14? (?)
4. The children / watch cartoons in their childhood. The children used to watch cartoons in their childhood. (+)