根据句意填单词，首字母已给出。
1. We should brush our t_________ every day.
2. If you have a toothache, you must go to see a d_________.
3. I'm very t_________, I want to drink some water.
4. I have an i_________ meeting. I must go now.
5. —Peter. What's the m_________ with you?
—I'm very tired.
6. His temperature is very high. He has a f_________.
7. You have a sore throat. You should drink some hot tea with h_________.
8. We should try our best to keep the b_________ of nature.
9. He is very tired at the m_________. He is sleeping now.
10. —What's wrong with you, Mary?
—I have a bad s_________.
