— I telephoned him twice and I couldn’t get through to him. —The line might have been out of order, _______?
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 ______.
This kind of work ______ great patience, so you should take your time.
Li Ming, as well as his parents , ____ to the party.