No, the word "region" does not need to be capitalized in a sentence unless it is the first word of the sentence or part of a proper noun (e.g. "Pacific Northwest region").
Need a sentence using the word crater?
This region is rich in plant life. We need to move to a new region.
You need an answer using the word plumage.
i need to plateau the bus
courteousy in a sentence: by saying please if you need help
you need to boost your self-confidence
Example sentence - She would need to confront him soon to get to the bottom of it.
I need help finding a sentence that uses the word mobilize.
"I have a powerful need to answer your question."
Here is an example of a sentence using the word fill: You need to take the time to fill in the blanks.
The servant polished the silverware before setting the table for dinner.