Most Americans enjoy moving from place to place. For example, they often drive their cars 120 to 160 kilometres away just to have dinner with a friend or even fly to London or Paris just to watch a football match. In some states only one person in five lives in a place for more than five years. One may be born in one city, and go to school in another. He may finish his middle school in two or three cities, and then go to college far across the country. When he begins to work, he may possibly move from job to job. Moving from one job to another, which is called "job-hopping", can be seen in many places in the United States. Job-hopping does good to workers because every change of a job gives them a chance to get better pay. And job-hopping also gives bosses the chance to get new ideas and skills from him or her. The writer thinks job-hopping   _  .
does good only to the workers does good only to the boss must be stopped is helpful