His life is very busy.

This sushi uses raw fish.

He is a second-year high school student.

The problem of space debris could potentially have a significant impact on future space development.

I have been to Ningxia.

Natsumiko is my best friend.

When it becomes summertime, the days get longer.

Every year, a wonderful summer festival is held in this town.

Last summer, I went on a trip abroad.

Natsuki is my best friend.