I don't know how to solve this situation.

I found a Middle Ages anonymous leaflet, a graffiti.

Back then, I was still a student.

I am interested in the history of the Middle Ages.

His opinion was reflected in the final plan.

Your opinion will be reflected in the final decision.

We should take responsibility as part of society.

I am very interested in social science.

He deeply believes in the principles of socialism.

He is an expert in sociology.