When ___ comes to saving energy , big changes start with small steps , like turning off the lights.
The films produced by Disney _____ all over the world.
______ his homework, he went on to preview the next lesson.
In 1989 an international law was passed to stop people _____ waste into the sea.
—— John wants to see you today. —— I would rather he ____ tomorrow instead of today.
—— Don’t you have a watch? —— But it has gone wrong. They say it’s not worth ______.