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: 'an elephant is standing in the road by the truck'. Reverse all words of length '5' in the given sentence.
Example Output: an elephant is standing in the road by the kcurt

Example Input: Sentence: 'a donut sitting in front of a laptop with black and orange sprinkles'. Reverse all words of length '1' in the given sentence.
Example Output: a donut sitting in front of a laptop with black and orange sprinkles

Example Input: Sentence: 'a man holding a rope and wearing a life jacket while water skiing'. Reverse all words of length '4' in the given sentence.
Example Output:
a man holding a epor and wearing a efil jacket while water skiing