---how far is it from your home to your school ---it's about 20____walk.请说明为什么,
问题描述:
---how far is it from your home to your school ---it's about 20____walk.请说明为什么,
A.minute B.minutes' C.minute's D.minutes
答
B minutes’
首先20要加s 后面讲的是20分钟的路程,所以选B但网上有人说要选D,为什么?