Sentence:  Earlier , this woman had <WSD>been</WSD> so filled with a chaotic variety of introjects that at times , when she was in her room alone , it would sound to a passerby as though there were several different persons in the room , as she would vocalize in various kinds of voice . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)