He is working as the mainstay of his family.

There is a problem with his aorta.

I plan to enter a private university next year.

He is good at solving algebraic equations.

His collection of books is so vast that it would take a lifetime to finish reading them.

His masterpiece is highly rated all over the world.

Among the five continents, Asia has the most population.

The philosophy of Ancient Greece has a significant influence on modern thinking.

My younger brother loves soccer.

I am studying Japanese at a junior college.