Oh wow you have this on English?
You can do it
It allows the reader to see how the character came to be who he or she is currently, it creates realism in the text, it creates tension between the narrator and the character, etc.
Answer:
good, old days
Explanation:
Since we need a comma between adjectives:
good, old days
When you are doing exactly at the moment not what you did yesterday,or what you are going to do tomorrow but at the very moment.
