He was a witness to the incident.

Who is the contractor for this project?

He acts like a free person.

I'm going shopping because I'm out of soy sauce.

He was observing the distant birds using binoculars.

English is widely used as a common language in the world.

He read the small print using a magnifying glass.

He is reading the daily scripture.

I used binoculars to observe birds in the mountains.

The study of phonons is an important field in physics.