单项选择题
W: why didn’t you make an appointment to see the doctor last week when you first twisted your ankle
M: the injury didn’t seem serious then. I decided to go today because my foot still hurts when I put my weight on it.
A. His injury kept him at home.
B. He was too weak to see the doctor.
C. He didn’t think it necessary.
D. He failed to make an appointment.