thank you

问题描述:

thank you
--- Is Tom still smoking?
--- No.By next Saturday he ______ for a whole month without smoking a single cigarette.
A.will be B.will have gone
C.will have been D.has been going
为什么选B不选C.选B应该怎么讲?为什么?

--- Is Tom still smoking?--- No.By next Saturday he ______ for a whole month without smoking a single cigarette.A.will be B.will have gone C.will have been D.has been going 确定用将来时,已经没问题.为...