had to do it
Mary non sapeva che lo doveva fare.
Mary didn't know she had to do it.
Why did he have to do it?
He knew he had to do it.
Perché Tom non lo doveva fare?
Why wasn't Tom supposed to do it?
He asked if he had to do it.
Mary non lo doveva fare, vero?
Mary wasn't supposed to do it, was she?
Mary mi disse che lo doveva fare.
Mary told me she had to do it.
Tom apparentemente lo doveva fare.
Tom apparently had to do it.
He says he had to do it.
Tom non sapeva che lo doveva fare oggi.
Tom didn't know he had to do it today.