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 hurt when I put my weigh on it.
A. His injury kept him at home.
C. He didn’t think it necessary.
B. He was too weak to see the doctor.
D. He failed to make an appointment.