But, by the time I had reached the top of the stairs, he was out of sight. 
But by the time I got upstairs, he was gone.
He was still standing upstairs by the time I got there.
Man writing on paper
He made small talk before entering the room.
We didn't find his continual undressing humorous.
The mailer needs to have address labels for every piece.
The baby is running.
The Kal re-fastened a plate he picked up.