Past educators believe that joining the Club and develop hobbies so that students are unable to devote more time to studying, not concentrate on key subjects.
Past educator believed to join the club and is interested in the development of such students can not devote more time to learn, not to concentrate on the key disciplines.
The great educator in the past believed that joining the club and the hobby of development made the students can"t devote much time to study, and not concentrate on the key subjects.