Only those who know, know this secret.

He is an important character.

She is good at making artificial flowers.

One part is important.

Ten hung the laundry outside to dry.

We went for a picnic to the lake on the weekend.

We had a picnic at the lake over the weekend.

Technetium is one of the most unstable elements in the periodic table.

Where is holmium located in the periodic table?

We will use cadmium in this chemical experiment.