He put his key into the front door and let himself in.

He put his key in the front door and went inside.

I put the key in the door and turned it quickly.

And then they said, okay, how about if we put the key at each end?

He put the key in the door and opened it for me.

The deal was that he'd put the key in his mouth when we got to the lot.

I walked back and put the key with the note.

He showed me where to put the key, how to start it.

He said nothing, but put the key in his pocket.

He started to put his key in the door, then paused.