for后跟一段时间的时候可否省略?可以说 They sleep less than nine hours吗
for后跟一段时间的时候可否省略?可以说 They sleep less than nine hours吗
I never sleep for less than nine hours.中文是什么?
sleep nine hours和sleep for nine hours
I sleep for nine hours every night
sleep less than is good for them
We work for nine hours each day on weekends,for可以省略吗
Studdents must sleep for about nine hours every night?
Children should sleep for nine hours every night对for nine ho
People who sleep ___ six hours a day.是填fewer than还是less than
Americans sleep less than is good for them.求翻译
sleeps for nine hours 的同义句
分析下句型individuals who average less than six hours of sleep ha