It is important to use mouthwash every day after brushing your teeth.

Choosing the flooring for the new house is difficult.

He couldn't answer the phone because of his absence.

This building is made of high-quality building stone.

This building is made of high-quality steel.

This oil solution is used to reduce friction in machinery.

It is said that this tree has been living for over a thousand years.

He was convicted of a serious crime.

Using this coating agent to paint the wall provides a waterproof effect.

In this class, various nationalities coexist.