Mr. Sotozono is my best friend.

Insects have an exoskeleton, which protects their body.

We are searching for extraterrestrial life.

Please teach me how to calculate the circumcenter of this triangle.

Sotonami is my best friend.

The outward appearance of that building is very modern, attracting people.

He has experience living in a foreign country.

That proposal is completely unthinkable.

Well then, I'm off.

He admitted that it is difficult to execute the plan, saying 'it is easier said than done.'