They can switch on and off a billion times a second.

They will switch on and off in the first two weeks.

But he could see the small black switch on the side.

The Face was looking toward the light switch on the wall.

She switched on the light and got out of bed.

He switched on to see if the set was still working.

There was a light switch on the wall near the door.

Her hand was out to switch on the light when it happened.

She went to the door and switched on the light.

The young student had gone in before them and switched on the light.

The switch on the other side of it was down.

I switched on the light and looked at the floor by the bed.

With his free hand, he moved four switches on the control wall.

He took a step inside, and switched on a light.

There was an outside light which no one, so far, had thought to switch on.

It was easy to make her way without switching on a light.

A very old couple came in and switched on the television.

She knew what it was, before switching on the light.

I switched on the reading light at the head of my bed.

That is something we have to be really switched on.

He opened his front door and switched on the light.

It switches on every night, but the need is gone.

He switched on the light, sat up and looked around.

He reached in past me to switch on a light.

A light switched on at the end of the hall.