—It’s smoggy these days. That’s terrible!—Yes, I hope to plant trees. ______ trees, ______air pollution.
--- ____________ ? --- He’s fine.
--- Remember to give your mother a call when you get the news. --- ____________ . Don’t worry.
Betty had nothing for breakfast, ____________?
____________ people went to the concert which was held in People's Square the night of May Day.
You should ____________ your hands if you want to ask teachers for help.