His opinion was treated as valueless.

His actions demonstrate his own valuelessness.

He despises his own mistakes.

He likes to take a walk in the park at dusk.

The International Atomic Energy Agency is an international organization that promotes the peaceful use of nuclear energy.

The World Trade Organization is an important organization that sets the rules for international trade.

The World Health Organization is working to improve public health worldwide.

My grandfather used to be a steam locomotive driver.

I commute to work every day using public transportation.

He worked as a rear gunner in a fighter plane.