Example sentences of "[am/are] necessary [verb] [adj] [noun pl] " in BNC.
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| 1 | Additional studies are necessary to correlate these concentrations with clinical effects . |
| 2 | This only adds to the suffering , because early diagnosis and appropriate treatment are necessary to prevent long-term complications . |
| 3 | The functions of the Advisory Committee will be to advise on questions that arise as to what qualifications are necessary for providing legal services connected with litigation and what requirements are necessary to ensure proper standards of conduct . |
| 4 | The amendment facilities are necessary to adjust any deficiencies of automatic processing in stage 1 — validation , parsing , integration , conversion of phonetic coding , etc . |
| 5 | Another stresses the fact that minimum population thresholds are necessary to maintain particular services and that , therefore , the most effective way of reducing or halting rural service decline is to concentrate growth and development in a limited number of locations ( Green 1971 ) . |