it's necessary to do it
'hay que' is impersonal (no specific subject). Followed by infinitive.
We don't like it, but it has to be done before Friday.
—Is it really necessary? —Yes, it has to be done, no matter what.
Even if it is hard, it has to be done properly from the start.
We don't like it, but it has to be done before Friday.
—Is it really necessary? —Yes, it has to be done, no matter what.
Even if it is hard, it has to be done properly from the start.