Example sentences of "[noun sg] is necessary [verb] that " in BNC.
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1 | A complete planned maintenance programme is necessary to ensure that pests are controlled and hygiene standards are maintained . |
2 | The correct interpretation of the outcome of any such test is necessary to ensure that appropriate techniques are used in subsequent analysis . |
3 | 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 . |
4 | If treatment is necessary ensure that you select a remedy which does not harm Orfe . |
5 | This length of time is necessary to ensure that adaptive changes occur to the lungs and heart . |