George, with _______ I played tennis on Sundays, was a warm-hearted person.
—I regret such a silly mistake in the English exam. — you keep on trying, I don’t really mind whether you can come out top in your class.
—I don’t suppose they could have finished their experiment, they? — , they are still doing it in the lab.
– How do you deal with the disagreement between the company and the customers? -- The key ____ the problem is to meet the demand _____ by the customers.
--What do you want to do next?We have half an hour until the baseball game. ---_____.Whatever you want to do is fine with me.
Some of you may have finished unit one._____; you can go on to unit two.