1.Chaplin was an actor.
2.Because the fly kept flying around Chaplin's head,and he coudn't drive it away.For once it even rested on his nose.
3.His friend felt very puzzled.
4.It means that the fly Chaplin was going to blow to death wasn't the one that was troubling him.
5.Chaplin is very humorous,and he always has a sense of humor.This small incident in life can reflect this aspect well .