71.   Because words change in meaning, it can be particularly useful to use a historical dictionary such as the Oxford English Dictionary.

72.   Just how much things can change in a short space of time.

73.   Students, meanwhile, grew in number and changed in character.

74.   Indeed it was possible that the obstacles to change in Britain were too deeply ingrained for any government to effect significant improvements.

75.   Changes in job specifications, personnel changes.

76.   The structure of the turbulence is thus changing in a way that produces a faster approach to laminar motion, perhaps because the generation of eruptions is suppressed.

77.   Its decor has not changed in two decades.

78.   They found a closer association between GHQ scores and events when those events were categorised according to their emotionally distressing impact than according to change in lifestyle.

79.   Finally let us see what happens when money supply changes in an open economy with floating exchange rates.

80.   Thus it is best to control interest rates directly, rather than relying on changes in money supply to affect them.