单项选择题

Conversation 2
Questions 8 to 10 are based on the following conversation.
[听力原文]8-10
W: Hello, Mr. Green. Are you free this weekend
M: Yes, why
W: We’d like to invite you to a Chinese music concert.
M: Oh, great! That’s very kind of you.
W: You have learned the Chinese word "erhu" and "pipa". Now you can enjoy them at the concert.
M: I can’t wait. When is it
W: 7:30 on Saturday evening. Let’s meet in front of the library at seven.
M: All right. Thank you so much.

Where are they going to meet()

A.In front of the library.
B.In front of the teaching building.
C.In the classroom,
D.At the gate of the school.