I think his demands are unreasonable.

I think his demand is unreasonable.

I have climbed Mount Fuji.

His illness was diagnosed as incurable.

He visited at an unexpected time.

Fujiki is my best friend.

There are a lot of delphacids in this rice field.

My leg cramped up and I couldn't walk.

Ayu is a fish that symbolizes the Japanese summer.

I made an appointment at the gynecology clinic for next week.