I learned how to solve inequalities in math class.

His behavior was thought to be an anomaly.

His behavior is completely abnormal.

He was punished for his disobedience to the rules.

The new product is unpopular, and sales are declining.

The new product was unpopular, and sales fell.

He has recently stopped attending school.

He was dissatisfied with the result.

In order to eliminate social unfairness, everyone must cooperate.

The unequal distribution in this society is becoming a problem.