Help me translate the following English sentences.

1. There was a terrible long line in front of the main building, and we had to wait for about an hour to register for the new course.

The browns promised to give us a hand when they had time.

The two children are going to go out with their parents.

Governments all over the world should take effective measures to combat transnational crime.

Nancy and her friends went swimming, which surprised me. I'm surprised.