Even when they tried to help him medically, the exercise proved pointless.

But the exercise proved to be more complicated than I'd imagined.

This exercise proved useful and has been repeated for the 1990/91 survey.

Despite them having no previous experience in dropping parachutists, these exercises proved to be successful.

"They have to remain conscious in order to lower the shields, or else the whole exercise will prove futile."

We are sure that the exercise will prove beneficial both to ourselves and to the individuals who undertake the unit.

The exercise may prove infuriatingly didactic, but this is, after all, a school.

Why exercise has proven to be effective at maintaining weight loss.

At the same time, this exercise has proved that there is inter-operability between the plans; we do not have 25 or 27 separate actions.

The listening exercise proved to be successful and should continue.