Sentence:  The only performance which was too soft for me was that of Yvette Mimieux , but since someone had to become the victim of despoilers , just to emphasize that such things do <WSD>happen</WSD> at these fracases , I suppose this was the attitude the part called for . 
Meaning of the word marked with <WSD> tags:  happen, occur, or be the case in the course of events or by chance