A: Good afternoon, Doctor Huang.
B: Good afternoon, young man.     56   
A: I have a bad cold. I cough now and then.         
B:     57   
A: For two days. And I’m feeling terrible now.
B:     58   Oh, you have a fever, too.
A: Is it serious?
B:     59     You just need some medicine.
A: How often should I take the medicine?  
B: Three times a day.     60   
A: Thanks a lot. Bye!