听一段材料，回答下面几个小题。
What is the most probable relationship between the two speakers?
A. Classmates.
B. Doctor and patient.
C. Teacher and student.
What is the man worried about?
A. His broken arm.
B. The coming exams.
C. The pain in his leg.
Where does the conversation probably take place?
A. In a hospital.
B. In a classroom.
C. At the man's home.