Example sentences of "they have prove [prep] [be] [adj] " in BNC.

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1 In several countries local ‘ curriculum implementers ’ of one species or another have been appointed and in the main they have proved to be conscientious and down-to-earth professionals who do an exceptionally useful job .
2 They have proved to be adaptable to a wide variety of climates and environments , able to tolerate heat and cold and with a high resistance to disease .
3 Sometimes they have proved to be persuasive and have become the new majority view .
4 I believe they have proved to be responsible bodies , who have worked well with their Chief Constables and the local authorities their members represent and they are proud of the forces they are providing .
5 In many areas where they have been established , staying on rates have risen and they have proved to be popular with students and staff alike for a variety of reasons .
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