I brush my teeth every day using a dentifrice.

A millennium of history is engraved in this castle.

He was arrested for the use of stimulants.

It is important to understand the merits and demerits of this technology.

This rocket is using a new type of combustion agent.

He kept talking with an impertinent attitude.

I can't stand his impertinence.

There is always a wall existing between him and me.

A deep friendship exists between him and me.

On sleepless nights, I sometimes take a soporific.