Example sentences of "[not/n't] [vb infin] for sure " in BNC.

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1 The Trinidad crashed near Madrid , and to this day we still do not know for sure what happened .
2 Camilla 's sister , Annabelle Elliott , admitted that she does not know for sure whether there is any truth in rumours of a relationship with Prince Charles .
3 She thought that her father probably now earned more than £100,000 a year , but she did not know for sure because it was nine years since she had last visited him , four years since she had last received a Christmas card from him .
4 But even if we discover that vineyards vanished from south east England at a time when the climate was getting colder , we still do not know for sure why they disappeared .
5 Then , when price is low firms do not know for sure whether it was because someone cheated ( produced a larger than agreed output ) , or because demand was low .
6 What the precise purpose was of installing complex electronics in an old sailing vessel he did not know for sure , and Iain did not press him .
7 Ages recorded on death certificates ( and to a lesser extent on marriage certificates ) were not always accurate because the informant did not know for sure .
8 So far , McDevitt has been questioned and fingerprinted , but the FBI will not say for sure that he is a suspect .
9 Kaplan can not say for sure , but he hopes that his work ‘ will encourage those conductors who say they are devoted to finding out Mahler 's true interpretive intentions to reassess their own respective approaches ’ .
10 I can not say for sure that there is any risk to the carp 's health , but that is a classic case of playing around with things we do not understand !
11 ‘ Do n't know for sure yet , but there wo n't be any European corporate jobs left after we centralise everything in Detroit .
12 As for Jessie herself , she had held her in her arms and reassured her that her Robbie would be all right , even though , from the scanty information given her by the nurse , she could n't know for sure if he would be .
13 I do n't know for sure that Ernest is going to emigrate . ’
14 He wo n't know for sure whether it 's a success until the time comes to deal with the excess stock .
15 ‘ I do n't know for sure .
16 ‘ I do n't know for sure , girlie , but we 'll sort it all out in the end , just see if we do n't .
17 WHETHER HEROIN is at the root of this unreliability I do n't know for sure , nor am I about to proscribe the freedom — or is that stupidity — of anyone to take whatever substance they choose to take , be it alcohol , tobacco , heroin or carpet cleaner .
18 We do n't know for sure .
19 Yes , probably , but I do n't know for sure .
20 On the Dipper , if you had your eyes shut and your ears plugged up — so you could n't see or hear what was going on — and you just thought about how heavy or light you felt , and what was happening to your tummy — you would n't know for sure what was happening .
21 ‘ I do n't know for sure where she goes , ’ he admitted to Wayne .
22 ‘ In fact , it may not turn out to be a job at all , but without you we could n't know for sure . ’
23 ‘ You do n't know for sure that this is why the agency was raided .
24 ‘ We do n't know for sure that it 'll strike , ’ said Duvall .
25 She still did n't know for sure if Chris had been murdered .
26 ‘ Of course I do n't know for sure .
27 It seems likely she did , but we do n't know for sure .
28 ‘ Listen , Rod , we do n't know for sure .
29 But I do n't know for sure . ’
30 If you do n't know for sure which type of drive you have check the ribbon cable running into it .
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