Here are some examples:
* Ca va? (This is going well?)
* Ca me plaît. (This pleases me.)
* Ca coûte combien? (How much does this cost?)
* Ca ne me regarde pas. (That doesn't concern me.)
It's important to note that "ca" can also be used in a more informal way to refer to a situation or a concept. For example, you might say:
* Ca devient compliqué. (This is getting complicated.)
* Ca fait partie du jeu. (That's part of the game.)
So, "ca" is a versatile word in French that can be used in a variety of contexts.