51.   But the emergence of the campaign finance questions in October made it all but impossible for the president to replace her without seeming to be squelching an investigation.

52.   But this one was apparently impossible even for him.

53.   But those figures drew billions of dollars into the fund, making the job of surpassing his record effectively impossible for the managers who have run the fund since.

54.   But the move also makes it virtually impossible for Block and other tax preparation organizations to make widely available what are known as refund anticipation loans.

55.   But when he got to Candlestick, strong winds made it impossible for a right-handed power hitter.

56.   By then it might be impossible for the controlling Pardons and Paroles board to stay the execution or commute the sentence to life in prison.

57.   Can they do the impossible for Lamont?

58.   Catching all such instances of fraud is virtually impossible for U.S. consulates abroad.

59.   Certainly, it is not impossible for funds with high expense ratios to turn in healthy profits.

60.   Clogged highways and disrupted train schedules made it impossible for thousands of investors and traders to arrive at work.