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 elephant standing in the wild'. Reverse all words of length '5' in the given sentence.
Example Output: a egral elephant standing in the wild

Example Input: Sentence: 'three giraffes looking over a wooden fence at two women'. Reverse all words of length '8' in the given sentence.
Example Output: three seffarig looking over a wooden fence at two women

Example Input: Sentence: 'a man holds a surf board on a beach'. Reverse all words of length '2' in the given sentence.
Example Output:
a man holds a surf board no a beach