A.the school's headmaster
B.the education department
C.the bus company
D.the parents
A.who had not yet answered letters
B.who didn't want to pay
C.whose children stayed away from school
D.who had asked about transport before
A.旧城改造在城市发展中的重要作用
B.历史文化名城的保护现状令人担忧
C.旧城改造中的一系列问题亟待解决
D.旧城改造切不可切断城市的文化肌理