听力原文:M: Has Professor Arnold from Sydney University arrived?W : I' ll have to check. T
听力原文:M: Has Professor Arnold from Sydney University arrived?
W : I' ll have to check. Then I' ll get back to you straight away.
What is the woman' s reply?
A.She knows Professor Arnold has come.
B.She thinks Professor Arnold has checked in.
C.She is sure that Professor Arnold has arrived.
D.She doesn' t know whether Professor Arnold has arrived.