—How long does it take to get to the sation?—It's _____walk.
问题描述：
—How long does it take to get to the sation?—It's _____walk.
A.six minute's B.six-minutes C.six minutes' D.six minutes
答
C.six minutes'
这里表达需要六分钟的步行时间,需要用所有格,所以先排除BD.
而因为六分钟需要用复数,所以是minutes,复数的所有格直接在s后面加’就可以了