Example sentences of "how long they [modal v] [verb] " in BNC.

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1 ‘ I wonder how long they 'll do it for ? ’
2 Already he was beginning to steal glances at the clock , comparing it needlessly with his own watch , missing bits of the film while he made rapid calculations as to whether he might conceivably be able to see Bridget home , and , when this had become out of the question , as to how long they would have to say good night at the hated corner .
3 How long they can remain silent is uncertain .
4 The allied commanders must also consider how long they can continue the air campaign without wearing out their airmen .
5 You know how long they can keep people hanging around . ’
6 ‘ Still no one is quite clear about how long they will last .
7 But many of the plastics being used in the linings are relatively untried and nobody has any real idea how long they will last .
8 PAKISTAN 'S twin-spearhead of Wasim Akram and Waqar Younis have restored belief in fast , skilful , full-length ( well , much of it ) bowling , though just how long they will last , with their fearful injuries to legs , backs and groins , is uncertain .
9 It may tell you that your batteries are good , but it does n't say how long they will remain so !
10 Near-spent batteries are good , but it does n't say how long they will remain so !
11 On the other hand , employers frequently do not know exactly how long they will need to make use of their temporary workers .
12 He wondered how long they could travel before they met anyone Cleo felt inspired to poison , and whether he would change his mind about his commitment to her before then .
13 WHEN I WAS GROWING UP , the boys I hung around with used to have competitions to see how long they could go without changing their underpants .
14 His first job was to calculate when they should finish , how long they should take to plough the whole field , each man ploughing at the rate of three-quarters of an acre in one day .
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