As I walked through the haze, I could see nothing.

This water is dangerous to drink because it contains arsenic.

Arsenic is one of the elements widely distributed in nature.

He wrote an ancient poem on parchment.

He decided to abstain from alcohol.

He went to the library to research the secret history of that country.

If you secrete a lot of sebum, your skin will become oily.

Hisao is my best friend.

Respecting the opinions of consumers is important for business.

Jusho is my best friend.