Charles liked music very much when he was at school, but 41 he went to the university he decided to study medicine 42 music. When he passed his examinations and became a doctor, he had to work in a hospital for 43 . There he discovered that a lot of patients were happier if 44 music was played for them. When Charles got an office and began to work 45 himself, he decided to 46 his patients happy by having a tape recorder in his waiting room play beautiful music for them. But 47 the tape recorder had been put in(安装), Charles’ nurse heard a woman complain in the crowded 48 , "Here we’re 49 waiting to see the doctor, and he’s just playing 50 piano in his office instead of doing his work. \