Example sentences of "[been] carry [adv prt] on [noun] " in BNC.

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1 Mastery of the skies over large parts of Germany had already passed to the allies in 1942 , and heavy raids , chiefly by the Royal Air Force , had been carried out on cities mainly in northern and north-western Germany ( Hamburg , Lübeck , Rostock , Cologne , Essen , Bremen , and others ) .
2 Less work has been carried out on copper , but the little that has ( e.g. Manser 1977 , pp. 22–3 ) indicates a very wide range of composition , matched by the range found in Roman copper alloys which may suggest extensive use of scrap such as that found in bags accompanying skeletons ( Myres 1978 ) .
3 Similar studies have been carried out on axes from the British Isles and , whilst the same alloys were used , the time scale of their introduction and use was quite different .
4 Little research has yet been carried out on controls of brittle fracture within the subsurface , although Bj rlykke ( 1983 ) attributed cement dissolution ( and consequent secondary porosity generation ) to overpressuring , with subsequent cementation in the overlying strata a consequence of pressure release .
5 He sounded people out and found the responses favourable , so he set about to prepare the finest survey to have been carried out on Manchester up to that time and indeed up to the time of Charles Roeder 's article , late in the 19th century .
6 Tests have already been carried out on mice in Cambridge .
7 little research has been carried out on consistency of performance on similar test material , especially of mathematics in context .
8 Before we consider why processing load might be greater at the end of a clause than at the beginning , we will discuss some experiments which have been carried out on reading , from which a similar pattern has emerged .
9 Unfortunately , most of the early studies on owl digestion have been carried out on species that do little damage to the bones of their prey .
10 To date , successful experiments have been carried out on rice and tomato to produce hybrids , but no such crops are available on a commercial basis .
11 Because so little work had been carried out on Hector 's dolphin before Slooten and Dawson began their studies , it is impossible to even guess at the number of dolphins which had been annually killed before 1984 .
12 Considerable work has been carried out on methods for analysing and modelling individual time series of observations .
13 Crown counsel said the defence would question the admissibility of statements allegedly made to police but it was the prosecution case that the attack had been carried out on behalf of the IRA .
14 However , these studies had been carried out on words in isolation , and we felt that , given the ambiguity of word boundaries , the search space might prove much larger and more complex than these studies implied .
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