There were five of them, moving slowly and with extreme effort.

And you can well understand the extreme efforts that were made to prevent them.

By extreme effort, Halleck managed to keep his voice even.

They opened despite my extreme effort, and again I met that gaze of fire.

He had controlled himself with extreme effort and suffered in silence.

I must often make an extreme effort to understand them.

It took the extreme efforts of both off them to raise him up.

It was an extreme effort, but she refused to think about the war.

Competition is well and good where it brings out extreme effort.

"They can lose that without any extreme effort in a month or so."