听力原文:W: How long will it take you to fix my watch?M: I'll call you when it's ready. Bu
听力原文:W: How long will it take you to fix my watch?
M: I'll call you when it's ready. But it shouldn't take longer than a week.
What is the probable relationship between the two speakers?
A.Librarian and student.
B.Operator and caller.
C.Boss and secretary.
D.Customer and repairman.