71.   The hours of interrogations and beatings were designed to break his spirit.

72.   The hours of liberty are long, full of wonder and narrow escapes, precautions, hidden devices and daring.

73.   The hours of this voluntary service are limited.

74.   The hours of work were reduced so that the hands were not exhausted at the end of the day.

75.   The ideal time at which to make an arrest is in the early hours of the morning.

76.   The necessary hours of light can not be replaced by more intensive light sources operating for a shorter period of time.

77.   The neutron production rate appeared to rise after about an hour of electrolysis and then dropped dramatically after eight hours.

78.   The positive side of all this is that the game provides hours of entertainment for children who are up to the challenge.

79.   The programme consists of an hour of sexist banter and innuendo.