Example sentences of "difficult [verb] that [adj] [art] " in BNC.

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1 It is difficult to believe that all the paraphernalia of sex is needed merely to ensure that males are not confused with females or males of another species : that could be achieved much more quickly and less colourfully .
2 It is difficult to believe that such a mechanism could have predicted the success of a full size lift .
3 The damaged vegetation grew back very quickly in the following months , and by the end of 1992 it was difficult to believe that such a wide swathe had originally been bulldozed .
4 Certainly , it would be difficult to argue that all the variation in human marriage laws could be explained in terms of their evolutionary benefits .
5 It is difficult to say that such a vast group of people has special needs , and indeed many older people may prefer not to be separated out from the rest of the adult population .
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