Sentence:  Seeing him in that condition , and about to enter the hall where the King , the Queen , the whole royal family and all the members of the highest aristocracy would <WSD>be</WSD> present , Grimm and the Abbe Raynal and others tried to stop him . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)