Example sentences of "but [det] [vb base] [prep] be " in BNC.

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1 But some have to be sold in specified amounts .
2 The brachiopods are still numerous in some environments , but these tend to be rather inaccessible , such as in the deep sea , which inhibits their direct study in the field .
3 But these tend to be expensive and do n't taste too good .
4 Of course , some small firms do offer growth potential , but these have to be identified and given appropriate support rather than a general subsidy linked to premises or land .
5 In animals physical and emotional , if not mental , changes do occur but these have to be elicited by careful observation of the animal , as it is not easy for it to indicate directly how it feels , or how its perceptions and emotions have changed .
6 Geographers have studied the recent adaptations of local industries , such as Manchester clothing ( Gibbs , 1987 ) , but these appear to be more concerned with the survival of firms , with the same or a smaller workforce , than to do with major ‘ re-industrialization ’ .
7 The members are all equal , but all want to be ruled by one person , who is superior to them all .
8 It might be impossible to draw everyone together for a single meeting but all need to be kept in touch with what 's going on and their opinions sought .
9 Parts of the economy need more spending in order to sustain profits , but all need to be taxed less .
10 The range of surface pumps available is wide , but all need to be housed in a purpose-built , well ventilated , dry chamber ( Fig. 7 ) .
11 There are many address book programs available through the shareware market but many tend to be complex .
12 It is not , of course : some will acquire it , but many have to be helped to learn it .
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