He got the highest grade in the demonstrative geometry class.

He is studying the history of the Soviet Union.

His proposal is just an armchair theory, without considering the actual situation.

His proposal is not a practical solution, it's just an armchair theory.

He finally arrived at his destination after a long journey.

He said he's 'roha' today, so he's staying at home and taking it easy.

What is the current state of Nichiro relations?

His conclusion is always clear and persuasive.

He is depressed about the loss in the game.

I lost my wallet at the station.