He was the first discoverer of that new species of plant.

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

It is important for each person to fulfill their role.

He acted according to my instructions one by one.

The use of renewable energy helps protect the global environment.

He is carefully doing each and every task.

He solved each problem one by one carefully.

This is my fourth attempt.

He is good at playing Beethoven's Ninth.

I like listening to Beethoven's Ninth.