My grandfather is eighty-eight years old.

He is studying the shape of the coracoid bone.

My younger sister is seventeen years old.

Let's have a barbecue with a shichirin tonight.

It's very interesting to learn about the Seven Wonders of the World.

He is good at finding stick insects.

My grandfather is seventy years old.

Seven new students joined our class.

Seven new students joined our class.

I was born and raised in the town of Shichinohe.