─Forty students in this class?Please tell me something about them.─OK, of them are exchange students,and all these twenty are local students.
Nelson Mandela is a ________ who fights for the rights of black Africans all his life.
Could you help me, Andy? We need ________ tables for the birthday party.
You had better ________ wine because you have to drive back home.
—Why do you like Michael Jackson?—________ he was the King of Pop.
—I don’t think ________ polite to speak to old people like that.—I’m sorry for that.