Education about sex is very important.

How tall is this building?

This program has become executable.

He can write sentences using potential verbs.

It's time to change the baby's diaper.

The wet snow began to fall, making the roads slippery.

This room has high humidity, so we need to use a dehumidifier.

The humidity in this room is high, so let's dehumidify it using a dehumidifier.

He is traveling around the world as an ecologist.

We must strive to protect the natural environment.