Example sentences of "this has [vb pp] [prep] [be] a " in BNC.

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1 This has proven to be a strong deterrent against theft .
2 This has proved to be a very workable group .
3 This has proved to be a very proper framework for the analysis of communication .
4 This has proved to be a great success and is encouraging participation from a wider range of companies than before .
5 This has proved to be a successful exercise with cost and efficiency improvements made in a number of areas .
6 ( laughter ) Allen : This has got to be a long-term plan .
7 This has got to be a Budget for jobs .
8 This has got to be a record for our group all on one day !
9 This has got to be a first .
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