Example sentences of "proved [prep] [be] impossible " in BNC.

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1 Conventional schooling in preparation for the show ring proved to be impossible .
2 It had been my intention to seek out a further interview with Mr Cardinal with minimum delay , but this proved to be impossible , owing largely to the arrival that same afternoon — some two days earlier than expected — of Mr Lewis , the American senator .
3 Both Kolisko 's and Boyd 's experiments were painstaking and proved to be impossible for other workers to replicate because of the complicated experimental apparatus involved .
4 The ECSC rules required a qualified majority in the Council for such a declaration , something which proved to be impossible .
5 We had hoped to coincide with the actual anniversary date of that fateful flight , but unfortunately this proved to be impossible , though we were able to travel to France on September 20 .
6 This proved to be impossible .
7 Western railway companies like the Union Pacific built immigrant lodging-houses and segregated eating-places at stations throughout the West , and attempted to keep immigrant and normal trains separate , but this proved to be impossible at the larger stations .
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