离开房间时请不要让灯开着。

Please don't ___leave the lights on when you leave the room.

我会让窗户开着，透点新鲜空气。

I'll ___leave the window open to let in some fresh air.

如果你不用电脑，请不要让它一直开着。

If you're not using the computer, please don't ___leave it running.