do you spend finishing your homework?
A. How far
B. How long
C. How much
D. How often
网友回答
A. How far
(答案→)B. How long
C. How much
D. How often
解析：本题的含义是你完成作业需花费多长时间？做某事花费某人多少时间通常说spend sb +时间长度+doing sth，对时间长度提问的通常用how long，而how far对路程提问，how much对多少钱或不可数名词提问，how often对频率提问，故本题选B。