听一段材料，回答下面几个小题。
What is the relationship between the two people?
A.Headmaster and teacher.
B.Teacher and student.
C.Father and daughter.
What reason did the woman give for being late yesterday?
A.She visited her grandfather.
B.She was ill and went to the hospital.
C.Her alarm clock didn’t work and the bus broke down.
What did the woman say about her grandmother earlier?
A.Her grandmother was going to have an operation.
B.Her grandmother had already had an operation.
C.Her grandmother was at home.