When we entered the theater, I had observed the audience.

I am sure no one saw Elwood enter or leave the theater.

When Hitler entered the theater, however, he discovered that it was almost empty.

Then, with Raven on his other arm, the three entered the theater.

Our show began before we even entered the theater.

During the four weeks it took him to complete his work, he allowed no one else to enter the theater.

He was observed entering the theater by a manager who happened to be there.

Nevertheless, we cannot watch every patron who enters the theater.

She purchased her ticket and entered the almost empty theater.

Skipping college, he entered the theater at 18, without professional training.