five hours' sleep,hour不是死的东西吗?不是应该用of吗?还有hours'与hour's有什么区别?

if we sleep for only five or six hours a night.we will be____ Ho,ho,ho Ho,ho,ho Ho,ho,ho And i pray I just can't sleep tonight knowing that things aren’t 这首歌的歌名是什么? 请教five-year-old和five years' old这类有关的,带-的复合名词的用法?为什么五小时的睡眠可以用six hours‘ sleep或者six-hour sleep,后者hour和sleep中间为什么可以不加-? in five hours' 对five hours提问 five hours' sleep,hour不是死的东西吗?不是应该用of吗?还有hours'与hour's有什么区别? sleep for 20 hours sleep 20 hours 哪一个更正确 Kangaroos sleep ( )hours a day. He sleep about two hours The old man needs at most five hours' sleep a night,but he ______ for over seven hours tonight.A.has fallen asleep B.has slept C.has gone to bed D.has gone to sleep 初中一年级英语一般现在时语法题A teenager________[sleep} for eight and a half hours and an adult for seven or eight hours.Old people____[require] only five or six hours. 关于英语主谓一致Two million tons of coal ______(were/was)exported last year Five hours of sleep ______(is/are)not enough.原因是什么? How long did you sleep last night?Only five hours. （2011扬州中考9）为什么不用how much提问?谢谢 relax five hours的翻译 eight hours' sleep 同义词 是不是eight-hour sleep I sleep for nine hours every night The baby _____(sleep) for two hours eight hours' sleep a night=Eight hours of sleep every night吗