71.   The alumni see each other every day, in company boardrooms and courthouse cafes, and when they turn out the lights to go to bed.

72.   The analogy would be to turning a light on and off, with on being one and off being zero.

73.   The clubhouse lights were turned off.

74.   The Clapper turns the lights on.

75.   The dogs can open and close doors, turn lights on and off, fetch or carry objects and pull wheelchairs.

76.   The firefly turns its lights on and off to attract other fireflies.

77.   The lights were turned off and the object was removed.

78.   The headlights must be on, and the Twilight Sentinel feature, which turns the lights on when it detects darkness, must sense that it is nighttime.

79.   The light is not turned off.

80.   The lights were turned down.