The times she sat up with us when we were ill.

She sat up with a start, finding that the room was dark.

He sat up in the corner, with his back against the two walls.

My wife spent the first night sitting up with me.

He sat up with a smile, but she did not return it.

She was sitting up in bed with the radio on.

But then he'd sit up all night with a patient, just sort of thinking about them, so he said.

"You should try to get some rest tonight instead of sitting up all hours with the old ones in the village."

There will be a little light because I am sitting up with him.

Finally, he sat up with his back against the door.