She entered the house quickly and inserted the key into her front door.

He stopped in front of Tony's door and inserted the key.

At last I heard the sound of a key being inserted into the lock, and the door opened.

There was the sound of a key being inserted in the lock.

He inserted the key in the lock but didn't turn it.

He inserted the key in the lock and opened the door.

I inserted the key in the lock and turned it.

She inserted her key into one lock and turned it.

He inserted the key, turned it, and the elevator started down.

In one quick motion he'd inserted the key and turned it.