Example sentences of "is necessary [verb] that [noun] " in BNC.

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1 In taking this up , however , it is necessary to realise that non-Republican people in the North are not disposed to agitate to get full civil rights for Republicans ; they have to be involved in their own interests .
2 For the process to proceed smoothly it is necessary to ensure that responsibility for overall policy decisions is assigned to an appropriate individual or group ( for instance the managing director or the board of directors ) .
3 A complete planned maintenance programme is necessary to ensure that pests are controlled and hygiene standards are maintained .
4 The issue of natural genius is more fully treated in chapter five below ; here , it is necessary to observe that Duck 's success was largely a consequence of the attention inevitably accorded to a prodigy of any description .
5 a good deal of egocentricity and naivety is necessary to believe that man has taken refuge in a single one of the historical or geographical modes of his existence , when the truth about man resides in the system of their differences and common properties .
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