No they aren't proper to use in writing class they are considered slang. It would show your teacher that your not interested in sounding educated and proper.
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Answer:
Writing narratives helps your creative juices get flowing. It is a way to express your emotions and feelings in an organized way and allows you to share a form of art.
Explanation:
Narratives help people explore themselves and their interests. They could be experiences you have had written in a story like form with a plot and setting, or they could be an idea that has grown into something more that you would like to share. Writing narratives can help you become both a better reader and listener, as it will help you advance your thinking on the given subject with the help of memory. Writing in this form helps to develop creativity through words and phrases when using figurative language. Narrative writing is a great way learn more about others and the world around us through the stories they share.
To get Away for an fresh start