You can use heaps of different words like,
Growled, mumbled, cried, shouted, screamed, snapped, laughed, giggled, replied, asked, smiled, chuckled, grinned.
Those are words i use in my stories!
You could use words such as "stated," "mentioned," "noted," or "commented."
You can use the word "demanding" as a synonym for "challenging."
The use of "gonna" instead of "going to" is a common colloquialism in American English.
Substitute or exchange can be used instead of replace.
Another word you can use instead of formality is "politeness" or "etiquette."
Reliable.
Another word for said is stated.
Instead of using I in a essay paper what word do you use?
You can use the word "demanding" as a synonym for "challenging."
Will, when, why, it, can
or
The use of "gonna" instead of "going to" is a common colloquialism in American English.
mixture
I have a stomach ache.
Myself
are
We use slang because it helps you to write notes in school, instead of writing the whole word. That is what my teacher said at school. Hope I answered your question well =]
no "It" is not used instead of he and she...