It’s hot in the shopping mall, because the air-conditioning system ______.
Don’t you know that Australia was, as a matter of fact, _________ used to be a nation of prisoners!
_______________, the players began the game.
Having checked the doors were closed, and _______ all the lights were off, the boy opened the door to his bedroom.
—Where are we going for the National Day,the mountains or the sea? —Either will be fine with me.
You are driving too fast. Can you drive_________?