1. The nurse rubs _________ on my arm to prepare it for injection. 

2. Ensure the wound is free from dirt before applying the _________. 

3. Nowadays, _________ can be treated with drugs. 

4. He _________ his right knee while training with the national team. 

5. It was difficult to _________ patients because of a shortage of medicine. 

6. I always keep a(n) _________ in the boot of my car. 

7. You may need to use _________ to pick up the pieces from the wound. 

8. Tu Youyou received the Nobel Prize in Medicine for discovering _________ in 2015.