Meaning: Lacking money or resources:
* The poor family struggled to put food on the table.
* Despite their poor circumstances, they maintained a positive outlook.
* The government implemented programs to help the poor access healthcare.
Meaning: Of low quality:
* The presentation was poorly prepared and lacked substance.
* The restaurant received poor reviews for its mediocre food.
* He gave a poor performance due to lack of practice.
Meaning: Feeling sorry for someone:
* I felt poor for the injured bird, unable to fly.
* It's poor form to gossip about others.
* He was in a poor mood after losing the game.
Meaning: Lacking in something:
* The soil was poor in nutrients, making it difficult for plants to grow.
* His vision was poor, making it difficult to see at night.
* The country's infrastructure was poorly maintained.
The best sentence for you will depend on the context and the specific meaning you want to convey.