In physics, electrons absorb energy and move from the valence band to the conduction band.

Kinya is my best friend.

This box contains contraband.

He is a diligent student, always the first to arrive in class.

He is working diligently on that job.

In this area, there are only a few water sources.

By using a proximal pronoun, you can refer to something close to the location or time the speaker is talking about.

I will respectfully accept your opinion.

That act is prohibited.

The Near East is historically an important region.