She let herself into the house by the front entrance.

There is a good plan of the site by the entrance.

Bob let them out by the entrance and went off to find a space.

Then they ran around to come in by the front entrance.

He stood by the main entrance and met the officers.

They had set up an operations room here by the main entrance.

He turned off the lights and let himself out by the main entrance.

Or it may simply be because he is there, right by the entrance, and willing to help.

There was a sign by the entrance saying, 'I just don't know any more.

They stood together in the darkness by the entrance to her room for a moment.