Example sentences of "have been [adj] for [adj] [adj] " in BNC.

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1 Each in his time has painted over the inheritance of his predecessor , but the Oak Leaf camps have remained because they have been necessary for each new Czar 's survival .
2 The amounts of material so far available have been insufficient for full chemical characterisation but we have tentatively identified them as corresponding to G34 and G17 extended through the C-terminus to include the C-terminal fragment of progastrin .
3 A , was the correct answer , until benefits have been payable for one full tax year .
4 Conservative Governments have been responsible for all major environmental legislation .
5 Behind the scenes at London Zoo , staff have been responsible for some notable breeding achievements among rare and endangered species .
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