Example sentences of "[vb -s] been [adv] [vb pp] [that] [adj] " in BNC.

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1 It has been frequently noted that two separate streams run through the history of the development of African primary school curricula in the last fifty years of the colonial period .
2 It has been widely held that normochromic anaemia is indicative of chronic renal failure , but recent epidemiological evidence supports our findings that anaemia is also commonly present in patients with both ARF and AonCRF , and is , therefore , not a helpful discriminant .
3 It has been well observed that classical revivals tend to be of short duration .
4 And it has been well established that some animals , such as pigs , are capable of completely consuming animal bones , along with other kitchen waste , so that even the sample of animal bones from a site may not give a true picture of diet .
5 It has been plausibly argued that this , perhaps too male-centred explanation , begs the question of what led to the increasing mental complexity necessary for hominid evolution in the first place , particularly when the older ancestors seem to have been tropical forest primary consumers .
6 It has been repeatedly reported that smooth muscle antibodies of autoimmune chronic hepatitis are directed to cell actin .
7 It has been effectively argued that live performance before an audience can be the most crucial part of a popular musician 's growth as an artist .
8 It has been previously shown that linear plasmids bearing Tetrahymena telomeric sequences are able to replicate autonomously in the filamentous fungus Podospora anserina ( 1 ) .
9 It has been generally accepted that adenomatous polyps develop in the second and third decade with most affected untreated subjects developing a colorectal carcinoma by the age of 40 years .
10 Although it has been traditionally assumed that Labour Governments are more susceptible to defeat in the Lords than Conservative administrations , Brazier concludes that the Lords have been surprisingly even-handed in dealing out legislative defeats .
11 In the basic Gaussian method just described , it has been tacitly assumed that all errors are equally likely .
12 But it has been further seen that strong justification is needed for adopting a system at variance with prevailing medical views .
13 It has been rightly said that these remarkable statements can only be seen as Hitler 's wish to make manifest his work in the eyes of history .
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