根据对话内容在空白处填入一个适当的词语使对话完整。

Doctor: What's wrong with you, young man?

Paul: I don't feel.

Doctor: I'm sorry to hear that. Please take your shirt and lie down on the bed.

Paul: Yes, doctor.

Doctor: Well, there's much wrong with you. Do your take much exercise?

Paul: No, doctor. I never have much time for exercise.

Doctor: How do you sleep?

Paul: Very badly, doctor. Can you give me medicine to help me sleep?

Doctor: Yes, I can, but I'm not going to. You don't need medicine. Just take more exercise.

Paul: You're right, doctor. It's important for me to healthy. Thank you for your advice.

Doctor: You're welcome. I hope you feel better soon.