It was also an impossible case, the kind that can go on for years.

He had taken an impossible case and won it.

It is difficult, and in most cases impossible, for the average tourist to identify the age of an object.

Dating of individual compositions is difficult, and in some cases impossible.

A. It will be very difficult, and in some cases almost impossible, to soundproof the two walls completely.

"But it's not an impossible case to win for someone who had absolutely nothing to do with steroids or similar drugs," he said.

I should begin by making a list of the impossible cases which must be excluded.

Common sense says it will be difficult at best, and in many cases impossible.

The civil rights division of the Justice Department has made this very difficult, however, and in some cases impossible.

It is a hard, if not impossible, case for incumbents to make.