— You seem to be familiar with this city!

— I _______ English in a high school here for three years. It' s great to be back! [ ]

A. have taught  

B. have been teaching  

C. had taught    

D. taught          

由（）负责对进站客运班车营运证件等进站手续及出市路线进行初审后，由集团客运管理部统一到市运管局办理《进站卡》。

A.各车属单位

B.各车辆驾乘人员

C.集团安全机务部

D.各汽车站