71.   But because impeachment is a political process, some legal experts say, the definition of what might constitute high crimes and misdemeanors might change over time.

72.   But her story is also an example of the ways the world has changed over the last hundred years.

73.   But in a single hemispheric trading zone, the mix of products could change over time.

74.   But have the particular skills needed for success at work changed over time?

75.   But just the fact that this decline can be contemplated shows how much the financial and economic environment has changed over the last few years.

76.   But she said she wanted to see whether the findings would change over the next few years.

77.   But some things have changed over the years.

78.   But that had changed over the past two weeks.

79.   But that will change over time, and the melting pot states are growing faster than the nation as a whole.

80.   But that started to change over the last decade, as increasing attention was paid to the fallout from that behavior.