101.   The biggest hurdle to be overcome is that the two sides are operating from different economic assumptions.

102.   The biggest hurdle?

103.   The Internal Revenue Service is the biggest remaining hurdle to the agreement.

104.   The sole-supplier provisions have been the biggest hurdle for European officials reviewing the case.

105.   The results are somewhat mixed, with perhaps the biggest hurdle being the mental adjustment of the farmers.

106.   Then she woke up one morning last March and was confronted with the biggest hurdle of her life.

107.   U.S. businessmen in Vietnam say the biggest hurdle to a comprehensive trade agreement between the two countries is about to be removed.

108.   Welch said the biggest hurdle facing the industry is the high cost of vehicles capable of space flight and the inherent danger of space travel.

109.   With Priceline, the biggest hurdle was embracing the headache-provoking concept.

110.   Yeltsin has admitted that the continuing battle in Chechnya is his biggest hurdle to winning re-election in June.