He excavated a skeleton.

He was sitting and hugging his knees, talking with his friends.

We play basketball in the gym every Friday.

Physical education is my favorite class.

There is a class observation at my son's school tomorrow.

The use of mobile phones is prohibited during class.

Learning about the existence of Yamatai-koku is very interesting.

Day after day, he continued to strive to solve the problem.

Day after day, he continued to strive to solve the problem.

My child attends a supplementary school every Saturday.