A: Hey, Li Jun. You were not at school yesterday.?
B: Oh, I had a headache and I had to ask for a sick leave.
A: . Did you see the doctor?
B: Yes, my mother took me to the hospital.
A: ?
B: The doctor said I had a cold.
A: ?
B: Yes, a little. The doctor told me to take the medicine three times a day and have plenty of water.
A: Are you feeling better now?
B: Yes, much better. But I've missed so many lessons.
A: . I'll help you later.