He always has an optimistic attitude.

My uncle works as a dairy farmer.

My uncle runs a dairy farm.

I've had severe diarrhea since yesterday, and I can't eat anything.

I had diarrhea all night, maybe because I ate something strange yesterday.

This paragraph is very long.

I went to Tokyo the week before last.

I started a new job last week.

The strong sense of impatience I feel waiting for his return is painful.

He is a very famous musician.