问题补充：
－ will you finish your homework, Ben?
－ In two hours.
A. How far
B. How soon
C. How long
D. How often
答案：
A. How far
(答案→)B. How soon
C. How long
D. How often
解析：疑问词辨析。How far多远；How soon多久；How long多长； How often 多久一次。根据答语，一小时后。可知上文提问的时间的长久。故选B，本，你多久能完成你的作业？
