To be healthy, one must have at least _____ sleep every day.A.eight hoursB.eight hour’sC.eight-hour’

题目简介

To be healthy, one must have at least _____ sleep every day.A.eight hoursB.eight hour’sC.eight-hour’

题目详情

To be healthy, one must have at least _____ sleep every day.
A.eight hoursB.eight hour’sC.eight-hour’sD.eight hours’
题型:单选题难度:中档来源:不详

答案

D
一般名词所有格 表示人的用’s或’,但是表示时间、金钱和距离的,也可以用表示人的用’s或’,故选D

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