He is good at singing songs in head voice.

He was promoted to private second class yesterday.

He was arrested for the crime of running away.

He tried to run away from the police.

He got frostbite when he went skiing.

His behavior is really nasty.

Today is Ritto, the first day of winter.

It's difficult to solve this equation.

I was surprised by his abrupt proposal.

Mr. Kito is my best friend.