Pity I didn't leave my hat or walking stick there.

He'd left his hat on, so I knew he'd just come in from the outside.

She had left her hat below in the cabin, he noticed.

He had left his hat on the edge of the table, the signal that it was safe to meet.

But what I called up about was this: you left your hat in my apartment.

She then returns to the table where Pat was sitting and finds that he's left his hat.

You see, I left my hat behind most unfortunately.

I have unfortunately left my hat behind while calling at this house.

At the top, he left his hat and coat at a check room.

Parking the car, he left his hat and cloak inside.