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 that has their skis crossed in the air as they snow ski'. Reverse all words of length '4' in the given sentence.
Example Output: a person taht has their siks crossed in the air as yeht wons ski

Example Input: Sentence: 'a gray tiger cat sitting on top of a chair'. Reverse all words of length '3' in the given sentence.
Example Output: a gray tiger tac sitting on pot of a chair

Example Input: Sentence: 'a very tall tower that has a clock on top'. Reverse all words of length '2' in the given sentence.
Example Output:
a very tall tower that has a clock no top