问题补充:
“ do you spend on your homework every day, boys?”
“About two hours.”
A. How much time
B. How often
C. How long
D. A and C
答案:
A. How much time
B. How often
C. How long
(答案→)D. A and C
解析:句意:男孩子们,你们每天花多久时间做作业?大约两小时。How much time多少时间, How often多久一次, How long多久。根据About two hours大约两小时,可知问多久,A与C为同义,故选D.