The headmaster is to give a formal_______ at the annual ceremony.

In the time of social reform, people’s state of mind tends to keep       with the rapid change of society.

There is strong evidence that the          of a father increases the probability that a youngster will use drugs and engage in criminal activity.

Many people in Haiti died from the earthquake because they didn’t have       to immediate rescue.

The____of Green Olympics, High-tech Olympics and People’s from across the globe.