She was surprised at how much effort it took to hold her voice level.

She tried to keep her voice level with only partial success.

I asked in real surprise, keeping my voice level with an effort.

Kirk had to make an effort to keep his voice level.

Trying to keep her voice level, she said, 'None of this makes any sense to me.

I should really get back to work,' said Jay, trying to keep i8 voice level.

It took all Eve's control to keep her voice level.

It took every bit of control she had ever learned to keep her voice level.

He tried, without much success, to keep his voice level.

I was trying very hard to keep my voice level.