Then, as though a light had been switched on, the service staff went into gear.

Little electric lights could be switched on up there if anything went wrong in the night.

All the lights that she'd passed had been switched on.

In another minute the door opens and the light is switched on.

It was quite dark, no lights had been switched on.

Bruce felt as though a light had been switched on somewhere in his head.

Almost at once, the white light was switched off and the blue came on.

The lights were being switched off all through the building.

At Time 11 this light was inadvertently not switched on.

The lights in the room had not been switched on yet.