He was deeply involved in the project.

He is deeply involved in the project.

The author's message is written on the opening page of this book.

I live in the Kanto region.

The children were playing by beating the pellet drum.

This dress is made of batiste.

Nitrogen dioxide is a cause of air pollution.

There is a large beehive in my garden.

Styrene is an important component for the manufacture of plastics.

He is a very famous artist.