This guy is my old friend.

Due to the fire, black smoke was rising into the sky.

Market research is necessary before conducting a preliminary trial of the new product.

The National Research and Development Agency plays a crucial role in advancing science and technology.

He stood up and started talking.

He is working in the field of law.

He succeeded in making his company independent.

He is pursuing spiritual peace and enlightenment through daily meditation.

She achieved peace of mind through faith.

My child goes to a public school.