Example sentences of "[conj] [vb mod] have [been] [vb pp] a " in BNC.

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1 Over ninety states have accepted the obligation not to acquire nuclear arms under the 1968 Non-Proliferation Treaty ; although this treaty has not prevented the detonation of a nuclear device by India and the covert acquisition of nuclear capacity also by Israel and South Africa , the total list of nuclear powers is relatively small , and perhaps less than may have been predicted a few years ago .
2 ‘ It 's something that should have been done a long time ago .
3 On going into the line for the first time , Jubert 's colonel gave the officers of his regiment instructions that must have been repeated a thousand times at Verdun :
4 I mean I had no idea that by doing ‘ I left no ring with her ’ by Viola I was doing something that must have been heard a hundred times that day — I had no idea .
5 Martin needed a bit of time to settle down and should have been given a couple of throws in his usual position in the middle before going to the front and staying there .
6 The house itself had one big comfortable room taking up the front with a glassed-in porch that caught the sun , and would have been called a conservatory in a grander house .
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