Everyone
done his or her homework.
Explanation:
Everyone is singular and, therefore, require singular verb.

Explanation:
I mainly has two meanings:-
- fix or attach (something) firmly so that it cannot be moved or lost.
- succeed in obtaining (something), especially with difficulty.
Answer: Basically the start of a story
Explanation:
An exposition sets the story up by introducing all the characters and the setting of the story. It will also introduce the conflict of the story.
It may also provide some insight into the background of the characters