In the 1980s several groups of researchers proved this to be true.

And his first group of almost 40 dresses proved that the approach worked.

He has refused, and the group is now proving a threat to his own security forces.

The trouble is, the group is proving it can be a hard sell.

Some such groups, city officials say, have proven themselves to be successful, tough-minded managers.

The group proved its best on top of all others for five consecutive years.

She and a group of children will prove it.

A number of adolescents refused to take part in the study; this group might have proved less successful than those who participated.

It would not be the first time the group has proven the power of the Internet for political activism.

This group proved a receptive audience and when the war ended several families moved to the community.