Sentence examples for so difficult to from inspiring English sources

So difficult to choose.

"It was so difficult to access materials.

This was not so difficult to understand.

It's not so difficult to imagine.

That's so difficult to find".

"It's so difficult to know.

It is not so difficult to imagine.

Why is it so difficult to prognosticate?

Why is this so difficult to do?

It's so difficult to do that".

It's not so difficult to be new.