21.   But some people doubt the ability of a government to run any large enterprise efficiently and say that poor management could swallow up those savings.

22.   Candidates who doubt their abilities to think quickly or speak coherently and convincingly in a spontaneous exchange are reluctant to debate their opponents.

23.   Concerns are cropping up about his defense, but no one doubts his ability to hit.

24.   Critics of the current plan doubt the ability of the interceptors to function when left for long periods in space.

25.   Doubting the ability of exporters to power the overall economy, investors also soured on shares of many retailers, which are sensitive to swings in the economy.

26.   Doubting the ability of exporters to power the overall economy, investors soured on shares of many retailers, which are sensitive to swings in the economy.

27.   Evander Holyfield has spent a good portion of his career making believers of those who doubt his ability.

28.   Even during the tough times, Glaus said he never doubted his ability to snap out of it.

29.   Even some of her fans doubt her ability to raise money and, without money, they say, she will be unable to get her message out.

30.   Even some tribal archeologists say they doubt the ability of science to tell them new things about their origins.