In this task, you need to reverse all words of a given length in the sentence. The number of letters in a word determine its length. For example, the length of the word "apple" is 5.

Example Input: Sentence: 'a large grouo of people riding on a bunch of motorcycles'. Reverse all words of length '5' in the given sentence.
Example Output: a egral ouorg of people riding on a hcnub of motorcycles

Example Input: Sentence: 'a small clean unoccupied bathroom on public transportation'. Reverse all words of length '10' in the given sentence.
Example Output: a small clean deipucconu bathroom on public transportation

Example Input: Sentence: 'a couple of people holding wii remotes and looking at a tv monitor'. Reverse all words of length '3' in the given sentence.
Example Output:
a couple of people holding iiw remotes dna looking at a tv monitor