He checked whether he remembered or not.

Cyclooctane plays an important role in organic chemistry.

He took out a book from the bookshelf at the back of the room.

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.