21. A. gives 22. A. watched 23. A. studies 24. A. hears 25. A. started 26. A. designed 27. A. stops 28. A. cats 29. A. agreed 30. A. measured B. phones B. crashed B. flourishes B. thanks B. looked B. preserved B. climbs B. tapes B. missed B. pleased munad C. switches C. occupied C. finishes C. blows C. decided C. sawed C. pulls C. rides C. liked C. distinguished Codvorticed D. dives D. coughed D. glances D. coincides D. coincided D. guided D. televisions D. cooks D. watched D. managed Dannoyed