it is about fifty__from here to my school A minuter'walk B minute walk Cminute's on foot

问题描述:

it is about fifty__from here to my school A minuter'walk B minute walk Cminute's on foot

A minutes' walk
fifty minutes' walk (50分钟是复数,复数名词的所有格是在复数s后加')
= a fifty-minute walk (复合名词用作定语)