---How soon will you finish your college?
--- .
A. After a year
B. In a year
C. Before a year
D. A year before
网友回答
A. After a year
(答案→)B. In a year
C. Before a year
D. A year before
解析：时间短语辨析。After a year一年后，用于过去时态；In a year一年后，用于将来时态；Before a year无此用法； A year before一年前。根据上文，多久你就大学毕业了？可知选B。