She did not turn her head at the sound of the door sliding back.

At once the door on the far side of the room slid open.

At the same time the door to the right slid open.

At the end of the building, a door slid back.

The door at the end of a car slid open.

Not a good sign, he thought as the door slid open before him.

He expected to hear somebody call to tell him to come in, but instead, the door slid open.

He turned to leave without taking her hand, and the door slid open in front of him.

A moment later, the east door of her office slid open.

The door slid open behind me, and I turned around.