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 person in full leather riding a motorcycle with a stuff animal on the back'. Reverse all words of length '3' in the given sentence.
Example Output: a person in full leather riding a motorcycle with a stuff animal on eht back

Example Input: Sentence: 'a red pair of scissors on top of an envelope'. Reverse all words of length '2' in the given sentence.
Example Output: a red pair fo scissors no top fo na envelope

Example Input: Sentence: 'a two tone blue clock is hanging by a pole'. Reverse all words of length '2' in the given sentence.
Example Output:
a two tone blue clock si hanging yb a pole