Example sentences of "must have be [vb pp] up " in BNC.

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1 So what we know is that this must have been blocked up before this doorway was inserted , okay ?
2 Therefore , most of the King 's resources must have been bound up in those ships and the various uses he could make of them .
3 I 've been looking for him all afternoon , but he must have been tied up with work .
4 Therefore either the customers must continually be changing identity ( so it is sensible for them to engage in some search ) and some expectation must have been built up about potential high benefits to search , or else search costs must be truly trivial , in order for the potential incumbent to stand a chance of usurping the established firm .
5 They must have been washed up on this ancient beach after being torn from their moorings , perhaps by a storm .
6 To solve the problem , either all the parties must co-operate after the dispute has arisen , which is inherently unlikely , or special clauses for the multi-party arrangements must have been drawn up and incorporated in each of the original contracts .
7 On the last day of the 1988 American presidential election Dukakis went on a whirlwind tour that must have been dreamed up by a desperate team .
8 The creation of this literature in Latin involved men whose native language was either certainly or probably not Latin : Livius Andronicus ' first language was Greek ; Ennius had Oscan ; Naevius , being a Campanian , probably also spoke Oscan as a child ; Plautus must have been brought up on Umbrian , and Terence apparently started with Punic .
9 ‘ He must have been held up , Mum , ’ she said .
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