My school is about twenty walk from here.A. minuteB. minutes’C. minute’sD. minutes

问题补充：

My school is about twenty walk from here.

A. minute

B. minutes’

C. minute’s

D. minutes

答案：

A. minute

(答案→)B. minutes’

C. minute’s

D. minutes

解析：名词所有格中，当单词结尾字母为s时，后面只加’即可，不用再加s。20分钟是复数，故选B。