What is the most difficult thing about being a cowboy
The language barrier is usually the most difficult aspect.
I think the most difficult thing Hillary Clinton face is to serve the nation while most people stone her with bad issues.
Einstein reportedly said that the most difficult thing to understand in the world is income tax.
dough
A cockroach.
turning it on! lol
"most difficult" is a personal thing. What you find most difficult someone else might find easy and also, the other way around.
getting the girl drunk enough
Answered this question.
Create a perputual motion machine
Adverbs that can modify the past tense verb "tackled" (in a football sense) include heavily, solidly, consistently, and effectively. The adjective tackled (tackled tasks, tackled runners), from the verb to tackle, has no adverb form.