Example sentences of "which must be [vb pp] if [art] " in BNC.

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1 They argue that all social systems share certain functional prerequisites which must be met if the system is to survive and operate efficiently .
2 there are three requirements which must be met if the prison system is to be stable : they are security , control and justice … ‘ security ’ refers to the obligations of the Prison Service to prevent prisoners escaping .
3 As with any technique , direct mail has basic principles which must be obeyed if the programme is to communicate and raise money over a long period : * It must be regular ( a minimum of eight times a year ) * It must be personal , relevant and informal * It must be good quality * It must ask for and offer something * It must appeal to emotion first and reason second
4 All the initial keywords are compulsory with the exception of FOREIGN-SET-IS which must be omitted if the module type is not foreign .
5 All the initial keywords are compulsory with the exception of FOREIGN-SET-IS which must be omitted if the module type is not foreign .
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