Past Simple.
1. I went to school.
2. She read a book.
3. They wrote a letter.
4. They ran fast.
5. We sang a song.
6. She drank lemonade.
7. The cat ate fish.
8. Kate did her homework.
9. Dave drove a car.
10. The baby slept.
11. They played chess.
12. Mike sat.
13. I swam.
14. She watched TV.
15. She fed birds.
16. She talked on the phone.
17. They danced.
18. Sue flew.
19. The child cried.
20. The boy built a snowman.
21. He made a cake.