问题补充:
— did you sleep last night?
—Only five hours. I stayed up late to do my homework.
A. How soon
B. How often
C. How long
D. How much
答案:
A. How soon
B. How often
(答案→)C. How long
D. How much
解析:词义辨析。how long 指时间或长度,意为“多长”; how soon 指时间“多久,多快”,常用于将来时;how often 指频率,“多久一次”;how much 指金钱“多少”。根据答语应为“多长”。