81.   But a good third of them are absolutely necessary.

82.   But he won the first two sets and was up a break in the third of the final.

83.   But for all the high-profile defections to Gore, Bradley retains the loyalty of many local officials, particularly in the southern third of the state.

84.   But in some New York City schools, a full third of the student body are taking fewer classes, sometimes three or even two.

85.   But Jay Bell drew a walk, his third of the game, and Lee went deep off Jeff Brantley.

86.   But in the last third of the piece, Ms. Tharp shoots herself in the toe shoe.

87.   But it does depend on the third of the indisputable imponderables.

88.   But on Wednesday, a Serbian car broke down on the road near Pec in western Kosovo, and the last third of the convoy stopped.

89.   But its tiny telephone company, like scores of similar firms largely established in the first third of the century by rural Midwestern farmers, has endured.

90.   But the final third of the book is given over to his ill-fated fight to save Hugh from drugs.