The sergeant knew that he had to do or say something.

The sergeant knew there was nothing James could do to him.

The sergeant knows his stuff, but he's not that good an instructor.

That every sergeant in the force knew how to do it was an open secret.

"The sergeant knew what was going on, but he did nothing," she said through an interpreter.

The sergeant knew she was a tough woman and had few weaknesses.

The sergeant knew that the killing would be his job.

The sergeant didn't know what to do next, except maybe talk to his lieutenant about it.

Those crops would never amount to much, the sergeant knew.

But she was curious whether this sergeant knew as well.