根据对话内容，用适当的短语或句子将对话补充完整。

(D-Doctor M-Mike)

M:Good morning, doctor!

D:Good morning, young man! ?

M:I'm not feeling well. I have a sore throat and cough a lot these days.

D:？

M:Yes,I have. But I don't have a fever.

D：?

M：Ever since last weekend.

D:Don't worry. Many people have the same situation as you because of the heavy smog

M:Really??

D:Drink more water and try to reduce the outdoor activities, then you'll get better soon.

M：OK.I will. Thank you!

D:.