a busy Sunday的用法和样例：
- If you're not busy Sunday, we'd love to have you both over for a barbecue.
- The shop looked out into a busy street.
- He is a busy man with many calls on his time.
- Yesterday I had a busy afternoon.
- After a busy life he was content to lie back and take life easy.
- A busy doctor wants ms patients to get down to brass tacks.