Add "ed" to given verbs 1. Decide 2. Agree 3. Play 4. Watch 5. Water 6. Study 7. Open 8. Close 9. Wait 10. Brush 11. Try 12. Kiss 13. Call 14. Invite 15.Observe
1) decided 2)agreed 3)played 4)watched 5)watered 6)studied 7)opened 8)closed 9)waited 10)brushed 11)tried 12)kissed 13)called 14)invired 15)observed Странно, двое же отвечали...Удачи!