He was the one who set fire to this project.

Excuse me, may I come in?

It is rumored that he is a member of a secret society.

There are no aspirated consonants in Japanese.

An aspirated consonant is a sound that is pronounced with a strong exhalation.

Please ensure the safety around you when using fire at the camp.

He is behaving like an idiot.

Chlorine detonating gas is very dangerous, and it requires careful handling.

My younger brother is diligently practicing Taekwondo every day.

He emphasized that there is still much to do, saying 'It's a long road ahead as the sun sets.'