问题
选择题
The train station is about ______ bike ride from the post office.
A．twenty minutes
B．twenty minute’s
C．twenty-minutes
D．twenty-minute
答案
答案：D
题目分析：句意为：火车站距离邮局大约20分钟的骑车路程。连字符号连接数词和名词，相当于形容词，这时名词不用复数形式。结合选项可知应选D。