Odpowiedź:
1. walk - walked
2. post - posted
3. smile - smiled
4. visit - visited
5. call - called
6. live - lived
7. act - acted
8. clean - cleaned
9. open - opened
10. finish - finished
11. paint - painted
12. try - tried
13. cook. - cooked
14. play - played
15. type - typed
16. dance - danced
17. answer - answered
18. laugh - laughed
19. arrive - arrived
20. study - studied
