His novel was actually the work of a ghostwriter.

My favorite dish is Hitsumabushi (eel on rice).

Do you understand the necessity of this project?

His grades are worth special mention.

This article features the noteworthy points of the new product.

He wrote his name with a calligraphy brush.

That information is unnecessary.

That information is completely unnecessary.

He conducts all his activities as a writer under a pseudonym.

His handwritten letter is very valuable to me.