His rank in school has risen.

Jiro is my best friend.

She is learning the grammar of the present progressive form.

This equation has homogeneity.

Solving a linear equation is difficult.

Keijiro is my best friend.

Sennenji is my best friend.

He always sticks his nose into other people's business like a busybody.

He was affected by secondary effects.

Where will the second party be held?