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Exercise :

26. was writing                            

      rang
27. were cleaning

28. will spend

29. were spending

30. had prepared

31. spoke 

      asks
32. was speaking 

      heard

33. are always arguing

34. have tried

35. had tried

36. was hard looking

37. sat

38. had sad

39. would forgive

40. hanged

41. attended

42. will come

43. discovered

44. was running

45. have still lived

46. were playing