50. went

51. had ever seen

52. were you doing

53. went - had called

54. had taught - left

55. had started

56. stops

57. will stay - answers

58. catch

59. will - finishes

60. will wait - come

61. will come/ is coming

62. see

63. will start

65. will be working

66. will have completed

67. will be driving

68. will look

69. will have worked

70. will be moving

71. wil have worked

72. will give - see

73. will pass

75. Will you have finished

76. will have finished

77. will be interviewing

78. will explain

79. see - will remind

80. will you be doing - will be practicing

50. => went

51. => had ever seen

52. => were you doing

53. => went - had called

54. => had taught - left

55. => had started

56. => stops

57. => will stay - answers

58. => catch

59. => will - finishes

60. => will wait - come

61. => will come

62. => see

63. => will start

65. => will be working

66. => will have completed

67. => will be driving

68. => will look

69. => will have worked

70. => will be moving

71. => will have worked

72. => will give - see

73. => will pass

75. Will you have finished

76. => will have finished

77. => will be interviewing

78. => will explain

79. => see - will remind

80. => will you be doing - will be practicing