His sleeping appearance looks very peaceful.

We used to sleep in a dormitory-style arrangement at the university dorm.

When I went on a trip with my friends, there weren't enough hotel rooms, so we all slept together in the same room.

He vomited in his sleep last night.

Last night, I drank too much and ended up vomiting in my sleep.

I bought new bedclothes.

The trailing edge of this airplane has a very unique shape.

After school, we study at the library.

He suffered a minor contusion on his occiput.

He sneaked into the school through the back gate.