Many of the big world sports events are _______by wealthy big companies, who hope to advertise their companies or their products.
He left home in 1980 and has never come back ____.
— How about a game of chess? — ____
— Don’t forget to take the message to my teacher. — ____.
— How many students are going to the Great Wall? — ____.
— Shall I help you with the washing ? — No, Mary. I can manage, but ____.