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: 'reflection of window on mirror in dark bathroom'. Reverse all words of length '10' in the given sentence.
Example Output: noitcelfer of window on mirror in dark bathroom

Example Input: Sentence: 'several people flying kites on a sandy beach'. Reverse all words of length '7' in the given sentence.
Example Output: lareves people flying kites on a sandy beach

Example Input: Sentence: 'a woman with a life jacket on holding onto a rope while engaging in a water sport'. Reverse all words of length '8' in the given sentence.
Example Output:
a woman with a life jacket on holding onto a rope while gnigagne in a water sport