He is working on digging a tunnel.

He is known as a person who values filial piety.

This trumpet is made of brass.

The ecliptic is on the Earth's orbit.

He explained to me in detail about the constellations of the zodiac.

He was looking for a synonym for that word.

His vulgar and thick voice echoed throughout the room.

The great majority of people are in favor of this plan.

My older brother is attending a college in Tokyo.

He has a full-size model of a dinosaur in his room.