Example sentences of "[pron] [be] impossible [to-vb] whether this " in BNC.

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1 But it is impossible to say whether this was because the partner 's monitoring of management boosted efficiency or because the Morgan association generally indicated a monopoly .
2 Hunsdon himself died in debt , but it is impossible to say whether this was the consequence of high expenses at court or whether he was typical : in the upper reaches of royal service , where conspicuous consumption was demanded , much would depend upon luck .
3 This is a much lower level of use than either Edinburgh or Glasgow , but in view of the standard of service observed on this occasion , it is impossible to say whether this usage figure represents lower demand , or merely laxity in control .
4 Unfortunately , systematic , industry-side data is now a thing of the past for the port industry following the demise of the National Dock Labour Board and the National Association of Port Employers , so it is impossible to determine whether this is a specific or general phenomenon .
5 It was impossible to tell whether this youth was very shrewd or rather simple .
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