71. A range of data sources will be used to derive the best possible estimates.
72. A rarely used volleyball net stood lonely in the dirt and weeds.
73. A reduction in computational complexity will provide greater flexibility in choice of models used to predict outcomes and correlations.
74. A relatively small number of questions on percentages was used in the tests developed by the project.
75. A seam ripper is useful, but should be used with caution to avoid cutting fabric.
76. A security officer from a nearby building appeared with a piece of metal which possibly had been used to attack the meter.
77. A series of articles and television shows publicized concerns that the chemical Alar, used to keep apples red and firm, could cause cancer.
78. A series of payments used to be the exception rather than the rule.
79. A significant difference might be described between the way in which Degas and the battle painters used these photographs.