婴儿每天需要睡12个小时以上。

Babies need to ___sleep more than 12 hours a day.

这间公寓最多可以住四个人。

This apartment can ___sleep up to four people.

别走神了！你已经在这堂课上睡了大半节课了。

Pay attention! You've been ___sleeping through most of this class.