在下列各句的空白处填入一个适当的词，使句子意思完整，语法正确。
1. I want to be a _______. I like helping doctors and looking after patients.
2. Dad, I'm hungry. Can you _______ supper for me?
3. It's very _______ today. Put on warm clothes when you go out.
4. We should take more exercise. It is good _______ our health.
5. You will have a good time _______ you go to the party.
