He was disheartened because he failed the exam.

I can't afford to miss this opportunity.

He was on the verge of going crazy from work stress.

His hair is getting thinner year by year.

I was surprised at the thinness of his understanding.

This canvas is very durable and long-lasting.

Shieko is my best friend.

He has completely gotten used to that job.

His attitude is causing unhappy feelings to me.

He is the key person in this project.