tell them
I should tell them.
Penso che dovremmo dirlo a loro.
I think we should tell them.
Non dimenticate di dirlo a loro.
Don't forget to tell them.
Vi ho detto di non dirlo a loro.
I told you not to tell them.
Non avrei dovuto dirlo a loro?
Shouldn't I have told them?
Why do I have to tell them?
Do you want to tell them?
Let's go tell them.
Will he have to tell them?
When should we tell them?