Example sentences of "[noun] have been [v-ing] for three " in BNC.

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1 A computer retailer has been operating for three years under the name of " COMPUTER EQUIPMENT SALES " and has a chain of stores in the South of England .
2 The figures were much the same after the experiment had been running for three months , but 83% thought the experiment should continue .
3 Thirty nine infants ( 18% ) in group A and 44 ( 24% ) in group B had been vomiting for three weeks or more before admission .
4 Japanese share prices have been falling for three years and have more than halved in value since the peaks reached in 1989 .
5 Andrew 's family has been trying for three years to get treatment for him .
6 The visioncare business , which Pilkington has been nurturing for three years and where it now ranks in the world 's top three , increased its operating profits by £4.4 million to £18.8 million .
7 The visioncare business , which Pilkington has been nurturing for three years and where it now ranks in the world 's top three , increased its operating profits by £4.4 million to £18.8 million .
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