It was an effort to keep his voice cool, calm; he wanted to shout.

Nevertheless, she tried to keep her voice cool.

She tried to keep her voice cool, but she couldn't make herself uncoil, and it came out muffled.

"I'd like you to do me a great favor, Professor," he said, keeping his voice cool and calm.

"Hardly a girl," Cassandra corrected, striving to keep her voice cool.

"You realize,'* she kept her voice cool, "this might run back to ancient Earth.

"Oliver Baines," she said, keeping her voice cool and professional.

Mel fought back the ragged edge of hope and kept her voice cool.

She kept her voice cool and level, measured out her words like a jeweler his gold.

She kept her voice cool with an effort.