71.   A phone number accompanying the picture may help Varney to find and knock off Prescott.

72.   A police car slammed into the side of our subway car and knocked us off the rails.

73.   A passionate, whirlwind beginning that knocks you off your feet.

74.   A tree limb knocks off his hat.

75.   A year ago, Bonnie knocked off the end of the pier.

76.   A U.S. spy satellite was knocked off line for a couple of hours.

77.   A wave knocked him off my shoulders.

78.   A World Cup first-timer knocking off the co-favorite to win this tournament.

79.   A. A high-pressure stream from a hose when the tank is pumped out should knock off those greasy buildups.

80.   According to some reports, Arafat was treated so roughly by angry Muslims at the Omari Mosque in Gaza City that they knocked off his trademark head scarf.