He made a model of a regular icosahedron.

After he solved the problem, he said, 'It's like seeing the true form of a ghost or a withered silver grass,' meaning things are not as scary as they seem.

He drew water from the well.

It is said that the education system in Japan is strict.

His energy is unstoppable.

My surname is Tanaka.

His surname has a historical background.

Education about sex is very important.

He decided to become a doctor.

I will turn 20 years old this year.