单项选择题
[听力原文] M: Miss, what time is Flight 502 for Chicago due to depart W: It leaves at 3:50, but you must check in one hour before departure.
When must the man check in（）
A．2:15. B．3:15. C．2:50. D．3:50.
单项选择题 Question 6: Why does Tony want to talk with Mrs. Liang（）
单项选择题 Question 8: What’s the most probable relationship between the two speakers（）
单项选择题 What can we learn from the man’s reply’（）
