Are you free now? I have ___________ to tell you.
The woman who is talking with Mr. Brown______ be Miss Li. She has gone to England.
.You ____ be tired—you’ve already been working for three hours without having a rest.
— Do you come to South Korea for the ________ of seeing your family or doing business? — I come here on business.
With the help of his friends, he changed a lot. Maybe that’s the ____ of friendship.
—What can we do to________ bird flu from spreading?—Try not to buy or eat chickens that have not been checked.A. prevent B. cause C. discover