He decided to become a doctor.

My surname is Tanaka.

His surname has a historical background.

I will turn 20 years old this year.

His answer was confirmed to be correct.

He always thinks about things calmly.

Observing a nebula is a wonderful experience that makes you feel the mystery of the universe.

He is an excellent student.

In winter, static electricity often occurs.

He is my best pupil.