Write a paragraph explaining why firefighters and police officers are often called heros

I would say that firefighters and police officers are called heroes because they would do anything to help or save a person's life. They sacrifice their lifes for other people. Sadly, while they do some of these sacrifizes, they may end up hurting themselves or there life's ending.

answer: swag on me

explanation:

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.