Example sentences of "difficult [prep] [be] sure " in BNC.
Next page| No | Sentence |
|---|---|
| 1 | Go much below that and the monitoring problems are vastly complicated by natural upsets , like earthquakes and even man-made chemical explosions ( which would also make a comprehensive test ban pretty difficult to be sure of ) . |
| 2 | The Roman emperors of the later third century AD made very similar coins at a number of mints , and it is difficult to be sure about their correct attribution . |
| 3 | On balance the Tory ideas on the National Health Service and on the state system of education seem preferable to those of Labour , but without being an expert it is difficult to be sure . |
| 4 | He sounds a further note of caution : ‘ It is sometimes difficult to be sure you are sending your cars to be serviced at a garage that is properly equipped to deal with diesel vehicles and has appropriately trained staff . ’ |
| 5 | It is difficult to be sure , but we might guess that they are becoming increasingly rare . |
| 6 | Working on so small a piece of basic material , it was remarkably difficult to be sure we had correctly identified the genes . |
| 7 | It was difficult to be sure where this left the objectives of the Uprising . |
| 8 | They thus occupy a rather special place in the spectrum of infectious human disease , since , without being able to find the germ responsible , it is not only rather difficult to be sure that the disease is present in the first place , but , having given a treatment for which there can be no de finite evidence of efficacy , since no organism has been eliminated , it can be very difficult to tell whether the infection has resolved or even whether the patient is better . |
| 9 | Even then it was difficult to be sure which of the shadowy tumbled shapes was the one in which Marian had dropped the sack . |
| 10 | As every parent knows , children 's eating habits can be unpredictable and when your child is away from home it is difficult to be sure what they are eating . |
| 11 | In true Eko fashion the guitars have bound fingerboards , zero frets and aluminium nuts/string-guides , and although it 's difficult to be sure , the fingerboard material is so dense and dark — almost black — that it could well be that rare and prized commodity , Brazilian , or Rio , rosewood . |
| 12 | ‘ Until we know how your son died it is difficult to be sure what is or is not relevant . |
| 13 | On one occasion he thought he heard Hubert 's teeth grinding ; but it was difficult to be sure because of the roar of the engine . |
| 14 | As a result , it is often difficult to be sure that breeding males fertilize all the females in the groups that they guard : for example , even if territorial male red-winged blackbirds ( Agelaius phoeniceus ) are vasectomized , their females sometimes lay fertile eggs ( Bray , Kennelly & Guarino , 1975 ) . |
| 15 | It is difficult to identify this character in unsectioned skulls , but it is likely that some degree of airorhynchy is primitive for hominoids , greatly exaggerated in the pongine lineage and modified towards klinorhynchy in hominines , but as my observations lead me to believe that the bonobo is airorhynchous to some degree , it is difficult to be sure of the ancestral hominine character state . |
| 16 | Its magnitude is officially given as below 9 , so that it should be invisible with binoculars ; I have suspected it with × 12 or higher magnification , but it is difficult to be sure , as there are scattered disconnected stars around . |
| 17 | It spans a period of over 600 years , i.e. from about 1900 BC to about 1250 BC , though it is notoriously difficult to be sure of dates at this early stage of Israel 's history . |
| 18 | It can be very difficult to be sure of why a hoard of objects was buried in the ground . |
| 19 | On the other hand , it can be extremely difficult to be sure who is going to win until very near the end of the game . |
| 20 | They seemed not to be , but it was difficult to be sure that they had not simply managed to turn away again in time . |
| 21 | Maybe it would have got better without treatment — it happened sometimes ; it was difficult to be sure . |
| 22 | It 's difficult to be sure , but I 'd say he 'd been put in the water immediately after death and that he 's been tossed about in shallow water over a rocky bottom ever since . |
| 23 | Clearly it is difficult to be dogmatic about faunas of this age , when such short time-spans are involved , and it is also difficult to be sure that particular species are more time-controlled than facies-controlled . |
| 24 | In the circumstances , it is therefore often difficult to be sure of the first arrival . |
| 25 | Remains of older persons present more of a problem , and when dealing with earlier populations , it is difficult to be sure that significant age-changes took place at the same time , and that they showed the same group variability , as in modem populations . |
| 26 | First of all , I think that it it 's difficult to be sure of this because of the way in which the County Council prepared their the evidence on which I relayed relied and like Mr I did n't come here prepared to talks in detail about the inner northern . |
| 27 | ‘ But difficult to be sure , since your mother died quite young , and you had no brothers or sisters . ’ |
| 28 | ‘ Significant downside risks ’ were that it would be ‘ very difficult to be sure when consumers will feel that their finances are sound enough to support a stronger growth of spending ’ . |
| 29 | erm at the end of a metre is difficult to be sure , but it 's somewhere between ten thousand years and fifty thousand years in these deposits , to give you a rough idea of the kind of length of time we 're talking about . |
| 30 | erm it 's difficult to be sure . |