We are looking for a new supplier.

He was a misanthrope, avoiding interaction with people.

He is a gambling addict, causing trouble for his family.

He was pointed out by the police as an accomplice in the crime.

He is a hard-working worker.

He always buys cheap things, so in the end, it becomes 'penny wise and pound foolish'.

Acidic oxides react with water to produce acids.

Aluminum is an amphoteric oxide, it reacts with both acids and bases.

Peroxides play an important role in chemical reactions.

I will participate in an obstacle race this weekend.