Example sentences of "often [verb] over a " in BNC.

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1 Unlike groups in laboratory studies , the work group is not created and then disbanded permanently ; it often survives over a long period of time .
2 Second , the scope of what New Historicism involves is continuously changing , and the conflicts between contending views are often localised over a few issues .
3 Continental basins generally seem to be long-lived features with a subsidence history often extending over a period of 100 Ma or more .
4 For example , disputes often arise over an adolescent 's room , the parent might say : ‘ I want you to keep your room clean and tidy .
5 Anyone who deals with Ottoman institutions will know how perilous is the task of trying to define terms , since a number are possessed of multiple significations , often changing over a period of time , and the particular sense intended in any given case is not always clear from the context : will serve as one example , another , and , in the learned profession , which has the limited sense of a student at the Sahn and the wider sense of any student in " higher " education , that is , at a 20-akce medrese or above .
6 Pure Bouzy Champagnes , though profuse in number , are consistently high in quality and often improve over a period of eight to ten years in bottle .
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