they sleep for 15 house a day对 for 15 提问

they sleep for 15 house a day对 for 15 提问 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? 这句话为什么用过去完成时?They had then been without sleep for twenty-four hours. for后跟一段时间的时候可否省略?可以说 They sleep less than nine hours吗 go to sleep for they never sleep but sometimes they rest（ ）a short time.a.in b.for c.at 翻译Many walkers say they sleep better at night when they take walks 选择(of/for/with) exercise. 英语翻译sleep后不加for吗 They sleep in the winter是什么意思 sleep for 20 hours sleep 20 hours 哪一个更正确 they often sleep at night ()()they often () at night? 英语翻译We are determined to provide guidance for young people so they can get the right amount of sleep and make thebest of their learning potential. 初中的来看看这个怎么写：Koalas like to sleep __the day ,but at night they get up to eat A during B atC onD for 翻译 Too much study is oe important reason for this result再加一句Parents should care how long their children sleep，not just how long they study. 英文翻译,50分~!急.In this information time/era/age,the Internet never breaks for a rest,nor for sleep.But humans need to sleep and have to ,for they have to live by their own nature’s clock if they want to stay alive.However,this information Enough sleep is () for your health. Eboungh sleep is for your health I sleep for nine hours every night