Problem: What are the most important words?
The direction of the scrolling letters change from bottom to top and now they're in the middle.
Answer: change, letter, middle, scroll, top

Problem: What are the most important words?
it was found the smell of flowers is something people most look forward to when on holiday
Answer: flower, holiday, look

Problem: What are the most important words?
grapes do not grow on a willow tree
Answer:
grape, grow, tree