His opinion is very important.

Seiji is my best friend, he is always a fair and just person.

We have a responsibility to make this world a better place.

He received the letter challenging him to a duel and began preparing for the duel.

Gender roles are an important element in defining individual behavior in society.

His role is to fulfill his responsibilities as a leader.

It is important to understand the importance of health.

He is a renowned political scientist who has written many important papers.

We should avoid the politicization of sports.

It is not appropriate to politicize this issue.