閲讀理解。Sittingonachairalldayinschoolcanmakeanyonewanttomo...
問題詳情：閲讀理解。Sittingonachairalldayinschoolcanmakeanyonewanttomovearound.So,moreandmoreteachersarelettingstudentshaveaball.Bysittingonexerciseballsinsteadofchairs,teachersfindstudents’attentionim...