Example sentences of "may [verb] been [adj] for [noun] " in BNC.

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1 It may have been necessary for Jesus to have eaten a few fishes in order to survive in first-century Palestine , but it is not now necessary to feast on the bodies of dead animals in order to be healthy .
2 HIV may have been present for centuries in a relatively harmless form and only recently evolved into a more damaging one .
3 It may have been harder for girls from the Canongate to find such jobs ( the survivors were all from slightly more prosperous backgrounds ) .
4 That it may have been difficult for members to attend area sessions , should not rule out the possibility of encouraging collaboration among groups of local boards .
5 They may have been purpose-built for pedestrians , or be ordinary streets where the traffic flow is restricted ( usually to emergency services and possibly delivery vans ) .
6 Biologists believe the same benthic algae may have been responsible for animal deaths on Loch Lubnaig , near Callander , not far from my Stirling home , and at Loch Insh on Speyside in the past two years .
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