Each year companies in the United States could save as much as $58 billion annually by preventing illness among employees and gain as much as $200 billion through improving performance of workers if they simply provided offices with cleaner air.
(A) annually by preventing illness among employees and gain as much as $200 billion through improving performance of workers if they simply provided (B) annually if they prevented employee illness and gain as much as $200 billion through worker performance improved by simply providing (C) annually in employee illness prevention and gain as much as $200 billion through worker performance improved by simply providing (D) in employee illness prevention and gain as much as $200 billion through improving performance of workers if they simply provided (E) by preventing illness among employees and gain as much as $200 billion through improved worker performance if they simply provided
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发表于 2008-10-7 17:21:00
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