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

He passed the difficult exam.

In a flash, his condition worsened.

Can you answer this question?

That proposal is completely unthinkable.

As a practical question, how are we going to fund this project?

He is observing stars at the observatory.

A new approach is needed to solve this set of problems.

He is practicing hard to participate in a rugby match.

He needed a pinch runner because of his injury.