I first met her on the occasion of a friend's wedding.

Please always bring your ID at the moment prior to the exam.

When he returned to his country, we saw him off at the airport.

They (referring to women or girls) are my best friends.

This conference will be held on an international scale.

This plan is actually impossible to implement.

He started singing The Internationale.

He is interested in learning the international language.

He is an expert in international law.