Example sentences of "but it be difficult to tell " in BNC.

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1 Reported rapes have increased considerably in the 1980s , but it is difficult to tell to what extent this represents a real increase in the number of rapes or an increase in the reporting of them .
2 But it is difficult to tell whether this is the fault of the Act , or due to the public backlash against young offenders .
3 They were some of the best he 'd ever taken , he said , but it was difficult to tell since he 'd dropped them in the water when he was changing film .
4 Steen looked annoyed , but it was difficult to tell whether or not he had recognized the voice .
5 But it was difficult to tell .
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