I put the book down and sat up on the bed.
She sat up on her own for the first time in many days.
He sat up, and took his time to look about him.
She sat up in bed, put her arms around him.
He sat up, feet over the side of the bed to rest on the floor.
Finally, he sat up with his back against the door.
We sat up in the bed, making room for another.
I sat up in bed and put my feet on the floor.
She sat up in bed and looked at her watch.
He sat up in the bed and saw the room.