The most appropriate language is formal language
Everyone
done his or her homework.
Explanation:
Everyone is singular and, therefore, require singular verb.

The Second Amendment (Amendment II) to the United States Constitution protects the right to keep and bear arms. It was ratified on December 15, 1791, along with nine other articles of the Bill of Rights. Xxx
Answer:
one
Explanation:
first letter of a sentence should always be capitalized as well as when beginning a "quote"
It adds suspense, such as pieces to an unsolved mystery.