Switched

She switched on the lamp because it was dark.

You are asked to refrain from smoking until the sign is switched off.

When the program finished, we switched the radio off.

I switched to Google Chrome and it worked.

The mobile phone you have dialed is either switched off or outside the coverage area. Please try again later.

This is the first time I've ever switched on this lamp.

Have you ever switched on all the lamps of your house?

This is the first time I've ever switched off the heater in winter.

Have you ever switched off the heater in winter?

When was the last time you switched off this lamp?