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.