Sentence:  At the other end of the spectrum , where the more advanced countries can be relied upon to make well thought through decisions as to project priorities within a consistent program , we should <WSD>be</WSD> prepared to depart substantially from detailed project approval as the basis for granting assistance and to move toward long-term support , in cooperation with other developed countries , of the essential foreign exchange requirements of the country 's development program . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)