单选题
A. How about your presentation? B. He needs it for tomorrow's presentation. C. I think so. D. Where are you heading? E. You are welcome. F. No problem! G. What can I do for you? H. No, thanks! Alice: Hi, Sam! It's nice to see you here. Sam: Hi, Alice! Alice: 56 Sam: To my dorm. Alice: Great! Could you take this book to Peter? Sam: 57 Does Peter know what it is for? Alice: Yes. 58 Sam: 59 Are you well prepared for it? Alice: 60 See you tomorrow! Sam: See you!