单项选择题
A．Swimming is also a good exercise. B．She likes swimming better. C．She prefers hiking to swimming. D．Hiking is not a good exercise.
A．Pretty well, thanks. B．Yes, thanks. C．Nice to meet you. D．How do you do.
A．You have to buy it. B．This afternoon, I think. C．On the third floor of the library. D．It’s 10: 30.