Have difficulty in + -ing
She has no difficulty to do it.
She has no difficulty in doing it.
Most Unbelievable Feats Of Humans
Niagara Falls tightrope walk
Holder of 9 Guinness World Records, Nikolas Wallenda, an American acrobat, aerialist, stuntman, high wire artist, and author is best known as the first person to walk a tightrope stretched directly over Niagara Falls. It took him 2 years to get approval from Canada and the US to perform this incredible feat.