Example sentences of "[pron] are often [vb pp] to [be] " in BNC.

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1 This is shown by prices in the " grey market " which are often reported to be so low as to negate all of the gross fees , thus absorbing all of the underwriters ' risk premium .
2 He is an omnivorous poet , quite as comfortable in the world of technology as in that of animals , plants and other country matters , which are often thought to be the more proper subjects of poetry .
3 For this reason they are often seen to be weak ; yet it is this very willingness of the subordinates to shift their own goals in order to preserve the harmony of the team that makes it possible for the group at the top of the hierarchy to perform at all .
4 Indeed , they are often considered to be so routine that they are taken to be ‘ normal ’ .
5 They have generally been found by the chance of fieldwork and aerial reconnaissance and many are awaiting discovery ; when they are studied in detail they are often found to be much larger than thought at first , covering areas , in some cases , of over 100 acres .
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