She could not keep the worry out of her voice.

He could not keep an edge out of his own voice.

I tried to keep the worry out of my voice.

He tried to keep the concern out of his voice.

She was trying to keep the concern out of her voice.

And he couldn't keep the interest out of his voice.

I didn't try to keep the fear out of my voice.

She tried to keep the fear out of her voice, but it was hard.

She had to fight to keep it out of her voice.

She tried to keep the concern out of her voice.