i went to school one day
These fine gentleman will be your counselors (or evaluators) for the day
My prospects are looking better every day.
One day i would like to probe the bottom of the ocean!
Americans traditionally eat turkey on Thanksgiving Day.
Polyglot was our word of the day.
Since that is not a word I would not attempt to use it in a sentence.
You just did use the word colonize in a sentence.
If I were to eat a hamburger every day, the monotony would be boring.
She worked day and night to meet the project deadline.
how would you use the word finished in a command sentence
1. you did just use that word in a sentence 2. if a doctor would use the word tumor in a sentence they would probably say "we need to remove the tumor from this persons body."