Example sentences of "had have a [adj] impact on " in BNC.

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1 The existing trade embargo , imposed following the September 1991 military coup [ see pp. 38430 ; 38522-23 ] , had failed to produce concessions , and had apparently provided opportunities for the rich pro-coup elite and sections of the army to profit from widespread smuggling , but there was evidence that it had had a devastating impact on Haiti 's economy .
2 The war had had a differential impact on the economies , with Belgium much less adversely affected than the Netherlands .
3 Our analysis of reading scores at 7+ and 9+ from 1983–91 showed no evidence that the injection of extra staff and money into Leeds primary schools , especially those in the inner city , had had a positive impact on children 's reading ability , at least as measured by the Authority 's tests .
4 In London , the combination of exceptionally low community charge levels and big swings to the Conservatives in Wandsworth and Westminster and , conversely , an almost equally poor Labour performance in charge-capped Brent and Hammersmith and Fulham , seemed to provide prima facie evidence that the poll tax had had a significant impact on behaviour .
5 For someone she had met only once he had had a remarkable impact on her .
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