54. is reading
55. is baking
56. is listening
57. is cleaning
58. is barking
59. are singing
60. are playing
61. are showing
62. are bringing
63. is watching
64. is winning
65. is standing
66. isn't working
67. is raining
68. aren't listening
69. are you waiting, waiting
70. Is it snowing? is raining
71. are you doing, are going
72. Are you listening, am listening
73. Are you watching TV?, are studying
74. are you doing, am doing
75. Are they sleeping?
76. is wearing
77. is stopping
78. am not ('m not) looking, am looking
79. is licking
80. is dancing, having
1. B
2. C
3. A
4. D
