George heard the sound of a key being put into the study door.

She got up and came across to the study door.

He had just reached his study door when someone called out from behind him.

They came from the front room, just as the study door opened.

Then he turned and walked away from her, toward the study door.

And he opened the door of his study for me to pass out.

I opened the study door and went into the hall.

He was about to sign off when the study door opened.

One of the men opened the study door and looked around the room in surprise.

She was in the hall when the study door opened and the doctor came out.