He conducted a series of experiments.

We will exhibit at a large trade fair next week.

His arrow made a direct hit in the center of the target.

His arrow hit the center of the target.

This is a once-in-a-lifetime opportunity.

A day without seeing her feels like an eternity of waiting impatiently.

This graph is apparent at a glance, showing that sales are increasing.

I think his advice is worth a thousand gold per word.

His hobby is underwater photography.

World War I was a large-scale war that lasted from 1914 to 1918.