Revise the rule on page 10 and write the -ing form of the verbs.

1. trying, 2. slicing, 3. knitting, 4. sewing, 5. traveling, 6. opening, 7. laying, 8. choosing, 9. snorkeling, 10. studying, 11. hanging, 12. staying, 13. driving, 14. lying, 15. tipping, 16. fixing, 17. sailing, 18. taking, 19. seeing, 20. dying, 21. writing, 22. sitting.