He was promoted to ensign in the U.S. Navy.

He once served as a junior assistant minister.

He once served as a junior assistant minister.

He served in the military as a major.

He has a few tiles in Mahjong.

A mass noun refers to a noun that cannot be counted.

This plan is impossible.

Unexpectedly, his face came to mind.

He has acrophobia and cannot go up to the rooftop of a building.

His behavior was suspicious, so I reported it to the police.