_________ necessary for students ________ sleep eight hours
students n___ sleep for eight hours
School students need eight hours of sleep a day,____?
完形:eight hours of sleep makes students active t________ the
i sleep for eight hours.中的for必须用吗?
We should sleep at ( ) for eight hours a day
To sleep at least eight hours every day is very necessary fo
eight hours' sleep 同义词 是不是eight-hour sleep
I think it's important for us ____(sleep) eight hours a nigh
it is n_ for you to sleep eight hours every day.
I sleep eight hours a day 就eight提问
英语翻译:我每天晚上睡眠时间需要8小时 _________ for eight hours every night.
eight hours' sleep a night=Eight hours of sleep every night吗