He is a genius in mathematics.

I will go to the airport tomorrow.

I used a digital recorder to record the content of the meeting.

He has a deep interest in astronomy.

This old radio uses a vacuum tube.

My test score was a perfect 100 points.

He wasted time on the way to the library.

The moment his misdeeds were exposed, thunder roared as if it was the immediacy of divine punishment.

His life took a sudden turn for the worse.

The situation changed all of a sudden, and we couldn't do anything.