Решение:
John usually goes (go) to the park every Sunday. He
- meets (meet) his friends there and they usually
- play (play) football. Today John isn't at the park.
- He is at home. He is helping (help) his father. They
- are cooking (cook) dinner for all the family. It's John's
- mother's birthday and they are having (have) a surprise
birthday party.
Ответ: 1. meets, 2. play, 3. is helping, 4. are cooking, 5. are having.