The opening of the study-hall door interrupted her worried reflections.
After this interview, Roy looked a long time out of the study-hall window.
Before going to bed on the night of the play I hung my sweater on a peg in the study-hall.
Then, noting that the eyes of her pupils were fixed in concerted gaze on the study-hall door, she turned sharply.
"I'm sorry to be late, Allan," he said pleasantly as he came through the study-hall door.