As a result of many years of smoking, he developed emphysema.

He lost in the match.

In mathematics, negative numbers represent numbers less than zero.

Once you finish this tutorial, you can acquire a new skill.

He is as strong as an ox.

The proprietor is thinking about a new business plan.

He works in the business category called IT.

His son is undergoing treatment for blastoma.

I paid my taxes for this year.

Learning about the historical tax system in this area is very interesting.