61.   Federal Aviation Administrator David Hinson also said that the first he learned of her serious doubts about ValuJet was in the Newsweek article.

62.   Even some AIDS activists, who laud Francis for his past achievements, have serious doubts that he might be onto something now.

63.   Even though it agreed to the changes, analysts said there were serious doubts about whether the board would approve them.

64.   For openers, there is serious doubt as to whether farmers could grow enough corn to produce the required ethanol.

65.   For some, there were serious doubts about whether the work was worthwhile.

66.   He also must overcome serious doubts among the population, which watched the presidential campaign degenerate into a dirty war of personal attacks.

67.   He is having serious doubts about how much longer he is going to play.

68.   He left in his wake a few hundred death threats and several serious doubts concerning his level of intelligence.

69.   He was having serious doubts about hitching his life to football.