Example sentences of "which has [vb pp] since the " in BNC.

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1 The second source of ‘ goodness ’ is from the centuries of human struggle which has endured since the dawn of civilisation .
2 Even while the various rugby groups in South Africa are heading for unification , the New Zealand Rugby Football Union still can not quite make up its mind how quickly it should bridge the gap which has existed since the tumultuous Springbok tour of New Zealand in 1981 .
3 There are no plans to end the maximum part-time option , which has existed since the early days of the NHS .
4 All this has , of course , been made possible both by technological revolutions in transport and communication and by the lengthy period of free movements of the factors of production over a vast area of the globe which has developed since the second world war .
5 According to ecologists it is impossible to predict the long-term impact of tapping into the area 's subterranean reserve , but ratification of the water district plan could result in the drying up of the natural springs in the Death Valley National Monument in California , destroy verdant valleys throughout the West and kill rare fish species such as the Moapa dace , which has survived since the ice age .
6 It is one of the world 's fastest-growing industries which has burgeoned since the Second World War , and especially since the 1960s .
7 In Phanerozoic time ( the time which has elapsed since the beginning of the Cambrian ) there have been three such ice ages , separated by intervals of a few hundred million years when the world enjoyed a more equable climate and lacked extensive polar ice caps .
8 The restoration of the warehouse and the adjoining 457m ( 500yd ) length of canal is viewed with enthusiasm by the Wey and Arun Canal Trust , a society which has worked since the early 1970s for the complete restoration of the Arun Navigation and the Wey and Arun Junction Canal between Pallingham and the River Wey , and which has restored the opportunity for navigation to several stretches of these waterways .
9 I mean , two of them seem as if they are referring back to something which has happened since the first two . ’
10 IRAN : Hundreds of prisoners , prisoners of conscience , continue to be executed each year in Iran , a pattern which has persisted since the proclamation of the Islamic Republic in 1979 .
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