从下面的选项内选出适当的句子补全对话

A: What's the matter with you, Xiao Li?

B: ___1___. I can hardly do any work, doctor.

A: ___2___.

B: Ever since last month.

A: Have you got a headache?

B: No, I haven't got a headache.

A: ___3___

B: Yes, I sleep very well.

A: Do you often have breakfast?

B: ____4____And I have a little food for lunch because I want to keep thin.

A: Oh, I see. ____5___You need to take more food and three meals a day. And take some exercise

    every day. Then you will get better soon.

A. Do you sleep well at night?  

B. There's nothing serious.    

C. I feel very weak.  

D. No, I don't often have it.  

E. How long have you been like this?