71.   Add in the uncertainty about what tomorrow holds and it is no surprise that working at Enron these days is so difficult.

72.   Advertisers say uncertainty about who their ads reach is a primary obstacle to greater Web spending.

73.   Akiko Kato, a spokesman for NTT, said the target had changed after the company began considering the expense involved and the uncertainties about demand.

74.   Alas, if anything ever created uncertainty about future tax liabilities, these roller-coaster provisions do.

75.   All that would happen if he missed was a summer of uncertainty about the tenuous relationship between one of his teammates and his coach.

76.   Both had expressed some uncertainty about the other legal theories behind the Bush appeal.

77.   BT drops to second amid uncertainty about whether it will abandon Airtel or try to use the company as a platform to compete with Telefonica in Spain.

78.   Bowles, who campaigns as if he has the Democratic nomination sewn up, agreed that the uncertainty about the primary made his task much harder.

79.   But a person close to the transaction said that the ambiguity reflected the complexity of the deal rather than uncertainty about the future.

80.   But a decade of overspending, the rise of a militant domestic opposition and uncertainties about the royal succession have opened new cracks in the House of Saud.