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 crowd of people skiing and enjoying the snow'. Reverse all words of length '4' in the given sentence.
Example Output: a crowd of people skiing and enjoying the wons

Example Input: Sentence: 'a couple of toothbrushes that are on a towel'. Reverse all words of length '6' in the given sentence.
Example Output: a elpuoc of toothbrushes that are on a towel

Example Input: Sentence: 'this bathroom stall has toilet tissue on the floor while the toilet is raised'. Reverse all words of length '3' in the given sentence.
Example Output:
this bathroom stall sah toilet tissue on eht floor while eht toilet is raised