问题补充:
— do you clean your room?
— Every day.
A. How long
B. How many
C. How often
D. How soon
答案:
A. How long
B. How many
(答案→)C. How often
D. How soon
解析:词组辨析。How long 意为“多长”,是对时间或距离提问;how many 指多少,主要提问可数名词的数量;how often指每隔多久,主要提问频率;how soon指再过多久,主要提问表示将来的一段时间的量。根据答语every day可知是对频率提问,故C为正确答案。