根据提示，写出正确的单词。
1. I want to go to the ___________ (邮局).
2. I usually come to school by __________ (出租车).
3. They go to the __________ (超市) to buy some meat.
4. My aunt is a __________ (科学家).
5. I feel very __________ (冷的). I am ill.