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 man riding skis down a snow covered slope'. Reverse all words of length '5' in the given sentence.
Example Output: a man riding skis down a snow covered epols

Example Input: Sentence: 'a baby wearing a bib setting at a table with food on it'. Reverse all words of length '7' in the given sentence.
Example Output: a baby gniraew a bib gnittes at a table with food on it

Example Input: Sentence: 'she threw the frisbee and aimed it with great expertise'. Reverse all words of length '5' in the given sentence.
Example Output:
she werht the frisbee and demia it with taerg expertise