His grandfather fought in the Second World War.

He is interested in the history of the Old World.

We all wish for world peace.

His behavior is outrageous.

I think his behavior is outrageous.

He is good at writing programs in high-level languages.

Low-level languages can directly access the hardware.

I could tell from his body language that he was angry.

He is majoring in linguistics.

He is excited to learn a new programming language.