By analyzing the _______ of a paragraph, you will see how the author develops and refines key concepts. A ______is an important topic for the reader to understand. Some sentences may _____, or add information to the concept. Others may ________, or clarify it.

which of these go in the reponse areas?
key concept, structure, develop, refine

In the response areas:

- Develop and refine: key concept
- Structure: structure
- Develop: develop
- Refine: refine