My brother has five _____ in his room.[ ]

A. pair of shoe    

B. pairs of shoe  

C. pair of shoes  

D. pairs of shoes

房改期间购买公有住房享受一次性税费优惠为（）

A．免缴土地增值税

B．免缴房屋契税和土地使用税

C．免缴个人所得税

D．免缴营业税