Example sentences of "[conj] they have [been] [v-ing] [noun] " in BNC.

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1 Indeed , French doctors believe that if left untreated ( and they have been treating women with cellulite for forty years ) it can lead to serious disorders such as arthritis .
2 Some elderly people suffer from iron deficiency due to a very slight , and sometimes unrecognisable , blood loss from such conditions as piles , diverticulitis , hiatus hernia — and occasionally bleeding from the stomach , if they have been taking aspirin for rheumatism daily for long periods , and this may cause anaemia .
3 The question arises as to whether this is the result of their having fallen into apathy out of fear of repression and a belief that it is not possible to make progress ; or whether it is precisely because they have been making progress through existing channels that the militant challenge has withered .
4 Would-be buyers who have been returning home empty-handed ( because they have not been offering sufficiently high prices ) have not learned that it is necessary to outbid other buyers ; would-be sellers who return home with unsold goods or resources ( because they have been asking prices that are too high ) have not learned that they must , if they wish to sell , be satisfied with lower prices .
5 We have been talking apples — the rights and concerns of women — while they have been talking oranges — the rights and concerns of fetuses .
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