听第5段对话，回答三个小题。
（1）What's the relationship between the speakers？
A.Teacher and student.
B.Doctor and patient
C.Passenger and driver
（2）When will the plane take off？
A.At 9：15.
B.At 9：45.
C.At 10：15.
（3）Why is the woman worried？
A.She will be late for her plane.
B.The police are by the roadside.
C.The man drives the car too fast.