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20.Likewise, when the 40 m.p.h. speed limit was _________ on a number of roads in London in the late fifties, there was a 28 percent reduction in serious accidents.
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19.As an economist, he was able to throw _________ on the problem
18.His glowing descriptions of a classless society where anyone could__________success through honesty and hard work fired the imaginations of many European readers.
17.In the heat of battle, players have been observed to throw themselves across the court without considering the _________ that such a move might have on anyone in their way.
16.The emergence of the _________ society after World War II gave birth to a new generation of upper class consumers.
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