A long pause, as if he was thinking how to answer.

There is a long pause and at last the voice says.

After a while, there was a long pause between them.

There was a long pause, then he came into the room.

There was a long pause, and she had to call again.

There was a long pause at his end of the line.

There was a long pause as they considered the questions.

There was a long pause on the other end of the line.

There was a long pause; they both sat looking down at the ground.

There was a long pause, and then he began to speak again.