听力原文:M: We need stationery for the seminar tomorrow, and the supplier hasn't delivered
W: He's been quite unreliable lately. We'd better not deal with him anymore.
M: Yes, but what about tomorrow? Do you know someone who can help us out on such a short notice?
W: Melissa tells me her brother has a store nearby. I'll speak to her right away.
Why is the man concerned?
A.Invitations have not been sent out.
B.A delivery has not been received.
C.Many staff members have been fired.
D.A new deal may be rejected.