Example sentences of "system [verb] been [vb pp] at " in BNC.

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1 An important series of research projects that does allow some judgment to be made between selective and non-selective schools in the comprehensive system has been undertaken at the Centre for Educational Sociology at Edinburgh University .
2 Since the first publication , the system has been revised at seven- or eight-year intervals and the eighteenth edition was published in 1971 .
3 If Professor Wheatcroft is correct in saying that a tax system breathes through its loopholes , the new tax system has been throttled at birth .
4 A shift system has been introduced at Broughton .
5 The evidence indicated that all parts of the flying control system had been connected at the time of the accident , and no evidence of a control restriction or jam were found , although such a possibility could not be totally dismissed , given the degree of disruption in some areas .
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