She could not unlock the box because she lost the key.
He made sure he had the house key so he could unlock the door when he got home.
Your question is a good sentence using the word "common".
This is an example of an exclamatory sentence using the word happening!
Obviously you are not capable of using a word in a sentence!
Here is a sentence using the word general: Tim was promoted to a General in the Army.
a good sentence is "I cannot use oversimplification in a sentence." that sentence is oversimplification.
I am not writing a sentence using that word.
I can give you a sentence using the word galaxy.
This is a sentence using the word aviator.
a sentence using the word endotracheal
This is a sentence using the word monomer. :P
I am saying a sentence using the word collagen.