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 woman is up to bat at a softball game'. Reverse all words of length '2' in the given sentence.
Example Output: a woman si pu ot bat ta a softball game

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 number of horses in a field of tall grass with trees in the background'. Reverse all words of length '10' in the given sentence.
Example Output:
a number of horses in a field of tall grass with trees in the dnuorgkcab