-- Did you go to bed early last night?
--- No. I watched a movie, so I didn’t go to bed until 11 o’clock.
A. 3-hours
B. 3-hours’
C. 3-hour’s
D. 3-hour
网友回答
A. 3-hours
B. 3-hours’
C. 3-hour’s
(答案→)D. 3-hour
解析：修饰名词是一个时间长度，通常用“数词-名词”的结构，名词不可使用复数，此
结构相当于一个形容词，故选D。