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.
Americans traditionally eat turkey on Thanksgiving Day.
One day i would like to probe the bottom of the ocean!
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.
Polyglot was our word of the day.
If I were to eat a hamburger every day, the monotony would be boring.
Fire and water are as different as day and night.
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."