He is the most competent employee of our company.

Who is the user of this software?

This bottle is reusable.

Kinetic energy is directly related to the speed of an object.

The use of renewable energy helps protect the global environment.

He was born as an illegitimate child and experienced many difficulties.

My grandfather used to till his privately-owned rice field.

Using the private railway makes commuting very convenient.

We respect Japanese culture.

We are going on a trip tomorrow.