Example sentences of "has proved [prep] be [adj] in " in BNC.
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| 1 | Moreover , as Maynard has demonstrated ( Maynard , 1984 ) , it has proved to be effective in enabling health authorities to live within their means . |
| 2 | Although the report did not allude to the possibility of fraud , it has proved to be prophetic in a number of respects . |
| 3 | Whereas Haslam has found that a detached outside perspective has proved to be valuable in several of the companies he has served as a board member , his early intimate knowledge of the coal industry was equally beneficial when he was asked to become chairman of British Coal , bringing his career full circle . |
| 4 | The economist 's model has proved to be unstable in the face of a policy regime change and has provided unreliable advice . |
| 5 | This assumption , however , has proved to be unwarranted in a number of respects . |