Sami needs to tell me what is going on.

He has no idea what is going on.

Sami has no idea what is going on.

I cannot guess at all what is going on with him.

I do not know what is going on between them.

Sami does not know what is going on.

Ziri trusts Rima enough to tell her what is going on in his life.

Do you know what is going on?

Hold on a minute, Tom. What is going on here?

We have come to know what is going on in the world faster and faster.