---Is Tom still smoking?  

---No, it’s a long time ______ he smoked. By next Saturday he ______ for three months without

smoking a single cigarette.[ ]

A．that, will be going

B．after, will have gone

C．since, will have gone

D．before, has gone

进口水果，烟叶，茄科蔬菜不需要事先申请。( )