She kept her voice light, as though nothing was wrong.
You've kept the lights on for a lot of people.
Maybe they'll keep the lights and heat on next year.
He had to keep the lights on at all times.
Keep the lights off during this process and until the next day.
It wouldn't work because most single men would keep their lights on all the time, just in case.
It wasn't easy - but we worked day and night to keep the lights on.
He kept his voice light, as if the words were quite casual.
She tried to keep her voice light, but it wasn't very convincing.
"You have to keep your voice light to present that quality," he explained.