- This key belongs to Tom.
Jack brings keys to school every day.
Mary accidentally lost her car key.
Mark forgot to bring the key out, so he had to ask the locksmith to open the door.
I can't find the key to the safe.
The key to success is for anyone to work hard and move forward.
Books are important keys that lead us to the hall of knowledge.
This is the key to my house.
Please keep the key of this safe separate from the password.
Alice did not bring the key out, so she had to wait for her mother to get off work.