Complete the sentences with the correct form of the words or phrases from 4.

1. The rash on my arm is so painful. It kills. 2. I was on crutches for six weeks after my accident. 3. My sister needed an operation when she broke her arm. 4. I hated being a patient in hospital. It was so boring! 5. It's important to wear a helmet when you ride a bike. 6. I had to brake quickly when I saw the cat in the street.