Sentence:  If it could be shown that judgments of good and bad were not judgments at all , that they asserted nothing true or false , but merely expressed emotions like `` Hurrah '' or `` Fiddlesticks '' , then these wayward judgments would cease from troubling and weary heads could <WSD>be</WSD> at rest . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)