Example sentences of "[pers pn] [is] not [adv] [adj] know " in BNC.
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| 1 | The latter requirement holds no difficulty , rather it is the former requirement which gives rise to difficulties because on occasions odour problems are complex , the source of the odour being difficult to identify , and it is not always possible to know whether or not a particular method of abatement will effect a cure in any given case . |
| 2 | It is not always easy to know why an event or action fires the imagination of the public and is remembered lo–g afterwards , whilst others , seemingly of equal importance or curiosity are soon forgotten . |
| 3 | It is not always easy to know who does what at Trinity Road or who to speak to on any requests or queries you may have . |
| 4 | The causes of cancer are still obscure , but it is not always necessary to know the cause of a disease in order to cure it or even to prevent it . |
| 5 | As we have already said , it is not always necessary to know very much about the individual identity of the sender or receiver , but only certain general facts about his or her social relation to us . |