The problem of illiteracy is a serious social issue around the world.

His music is loved throughout the world.

She is contributing to the improvement of literacy rates.

This problem is very serious.

Do you understand the seriousness of this problem?

This plan is unrealistic.

We should take responsibility as part of society.

He was a very excellent student before he turned to delinquency.

He is suffering from the misery brought by literacy.

The environmental issues are becoming more serious.