It's difficult to (say / tell) how old the building is.
NOT A TEACHER
(1) What an interesting question. I had never thought about this before.
(2) As the moderator told us, it depends on the context.
(3) Tom: How old is that building on the corner?
Sue: It's difficult to tell. It's built of wood, so it's probably pretty old; yet it has
some features that indicate that maybe it's not so old as I think. Sorry. I can't
give you an answer, Tom. It's just too difficult for me to tell. I am not an expert in
architecture.
(4) Sue: I just sent in my application for college. When do you think I'll receive an
answer?
George: That's difficult to say. I received my answer within one week, but who knows?
Maybe they have so many applicants this year that they will need more time to notify you.
NOTES: (a) Other people may disagree with my examples.
(b) In a certain country (which, of course, I shall not name) the people are afraid to
give their opinions about the government. I read that if you ask "Do you think the
government is a dictatorship?" they will answer (in their native language): "That is
difficult to say." They will smile and immediately change the subject.