71.   But her outlook changed when she had a baby and needed more flexibility with her work hours at the magazine she was working.

72.   But I still want to take a shower after spending an hour at a card show.

73.   But it is hard to stay fit when Americans work longer hours at sedentary jobs and take less vacation time than most people in developed countries.

74.   But she suffered from sudden episodes of depression, when she locked herself in the bathroom for hours at a time.

75.   But many have empty seats because police officers and others are working extended hours at ground zero.

76.   But spending that many hours at a mediocre job is a recipe for numbness.

77.   But supporters see options as a godsend for young companies that are growing quickly and need workers to put in long hours at relatively low pay.

78.   But the airline stuck with it and made some important concessions in the last hours at the bargaining table.

79.   But these are horrible hours at the Heights.

80.   But unlike domestic traffic with high turnover of planes at gates, international planes sit for several hours at a gate, preparing for an extended flight.