Some may have regarded it as a valuable historical academic exercise.

It can be a valuable exercise to sit down and work out just what you spend.

The third part of this valuable exercise is the mental aspect.

A generation ago, when Variety first started making a big deal of weekend box office, it was arguably a valuable exercise.

This could turn out to be a valuable exercise.

They seem to say: peeping itself can be a valuable exercise.

Other experts, told of the study, disagreed, saying it was a valuable exercise.

None of which is to deny that this was a valuable exercise.

This would be a valuable exercise: there is clearly a problem of awareness of people's rights.

Do you think that a 'full census' would be a valuable exercise?