Paper first invented in China .
—Is that all?—Yes. That’s all ______ I want to take.
—I have ______ completed all the work.—Congratulations!
What is a machine that is used to cool the air in a room by moving it around?
— What time shall we leave for the airport?— It’s foggy today. I’m not sure __________ be closed soon. Let’s go now.
We can’t afford to make any mistakes. To us, __________.