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 stepping out of a double decker bus'. Reverse all words of length '8' in the given sentence.
Example Output: a woman gnippets out of a double decker bus

Example Input: Sentence: 'a man in a suit has a phone up to his face'. Reverse all words of length '1' in the given sentence.
Example Output: a man in a suit has a phone up to his face

Example Input: Sentence: 'there is a man sitting on the train sleeping'. Reverse all words of length '7' in the given sentence.
Example Output:
there is a man gnittis on the train sleeping