单项选择题
A. Jack likes to play volleyball. B. Jack always goes to volleyball games. C. Jack often enjoys himself. D. Jack never goes to any ball games.
A. It’s a pleasure. B. I don’ think so. C. No, I don’t care about it. D. I’m sorry you didn’t.
A. Waiter and customer. B. Guide and tourist. C. Salesman and customer. D. Host and guest.