Her name is Secret.

She revealed a secret to me.

Hand washing and wearing masks are important for the prevention of COVID-19.

This compound has a tetrahedral molecular geometry.

A terrestrial planet may have an environment similar to Earth.

I happened to meet him at the park.

He was immersed in music.

My father is spreading phosphate fertiliser in the field.

I met him for the first time in a long time.

The afternoon classes are more difficult than the morning classes.