Examples of using "何が起こるか分からない。" in a sentence and their english translations:
There is no telling what will happen.
There is no telling what will happen in the future.
There is no telling what may happen next.
It is impossible to tell what will happen in that country.
You never can tell what might happen if Tom meets Mary.
- You never can tell what is going to happen.
- You never can tell what's going to happen.
Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present".