Answer:
Candy contains lots of sugar, so it is not very healthy, but can be eaten sometimes. It is the most common snacking food, and there are hundreds of flavors, shapes, and sizes. Candy is not limited to being sweet. Candy can be spicy in different cultures.
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.
Hope this helps!
You are really enough
This is really dangerous
Raining rapidly in US
I am eating outside
This may have advantages