根据对话内容，在每个空白处填写一个适当的单词。

(Lin Tao is a student from Shenyang．He was ill last night．He hurried to a hospital this morning．Now he is at the doctor's．)

Lin Tao：Good morning, Doctor．

Doctor：Good morning．“What's(1)________ with you, young man?”

Lin Tao：I've got a headache and a cough, I'm(2)________ I'll be dead．

Doctor：Don't worry．It's(3)________ serious．Have you taken temperature?

Lin Tao：Yes, I have．But I haven't got a fever．

Doctor：How(4)________ have you been like this?

LinTao：Ever since last night．

Doctor：Let me look you over．Open your mouth and say“Ahh”．Oh, it's nothing serious．It's just a cold．(5)________ this medicine three times a day and drink more water．You'll be better soon．

Lin Tao：Thank you, Doctor．

Doctor：You're welcome．