The Tertiary period was a very important time in the history of the Earth.

He passed the medical school entrance exam on his first try.

He passed the difficult exam.

My younger sister is twenty-two years old.

Let's go to see a movie together.

I will turn twenty years old next year.

Our project is scheduled to be completed on the twentieth day of the month.

There is a two-story house.

What art thou doing?

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.