He is behaving like an idiot.

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

This apple contains poison.

He finished all the work alone.

He is an expert in toxicology and conducts many studies.

He succeeded in making his company independent.

He is living a life of widowers and widowed.

Disinfecting your hands is very important to prevent infectious diseases.

He is feeling loneliness.

He drank the antidote.