Example sentences of "[be] [vb pp] for [art] long period " in BNC.

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1 A behavioural response is strengthened when it has an increased probability of occurring ( frequency ) or when it is likely to be performed for a longer period of time ( duration ) .
2 Does my hon. Friend agree that when such councils involve constitutional amendments to the treaty as well as , as always , substantial business for the Heads of Government to transact , some new formula should be produced whereby meetings could be scheduled for a longer period ?
3 Begin the list with the projects that have been waiting to be finished for the longest period of time .
4 The picture was not seen as ‘ a moment of time ’ but the wings were assumed to be spread for a long period ( Goldsmith , 1984 , pp.2–3 ) .
5 If an experiment produces animals that are to be kept for a long period , or that are to form the basis of a breeding colony .
6 The risk of a very old person falling and being left for a long period lying on the floor is a sufficient anxiety to encourage some families to opt for residential care for their elderly family member , when with enough support it might not be necessary ( Challis and Davies , 1985 , p. 571 ) .
7 Also in the crypt is the Duomo treasury , a pay-to-enter collection that is closed for a long period at lunch .
8 ( c ) Ensure that no voucher is retained for a longer period than 14 days from receipt .
9 British case at least , the problem of national or ethnic difference was masked for a long period by development occurring in the peripheries at the same rate and in similar ways to development in industrial England .
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