Example sentences of "have been find useful " in BNC.

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1 There is no precise form for such a statement , but the following structure has been found useful in practice :
2 ( In the SCAN scheme of analysis — see reference 2 — which we have developed to provide feedback to curriculum designers on the use of their material , we call these 1 and 3 levels of teacher guidance respectively , the level of demand is similarly classified unc The classification has been found useful much more widely .
3 The hierarchical structure of local viewdata has been found useful in the teaching of classification and in the sorting of ideas from the general to the specific which has proved helpful in note making , especially in the graphic form .
4 National Lotteries have been found useful at several times in our history .
5 Hormones of the adrenal cortex influence the behaviour of lymphocytes , the white blood cells involved in the development of immunity : the adrenal hormones , and synthetic related substances have been found useful in the control of those leukaemias which are , in effect , tumours of lymphocytes .
6 The list offered here is not a closed one ; the items put forward are simply those which have been found useful .
7 Books which have been found useful in the preparation of candidates :
8 Books which have been found useful in the preparation of candidates :
9 Books which have been found useful in the preparation of candidates :
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