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 sign explain the meaning of the road work'. Reverse all words of length '7' in the given sentence.
Example Output: a sign nialpxe the gninaem of the road work

Example Input: Sentence: 'a griaffe eating from a tall basket at a zoo'. Reverse all words of length '2' in the given sentence.
Example Output: a griaffe eating from a tall basket ta a zoo

Example Input: Sentence: 'a cat sits and stares while on a window sill'. Reverse all words of length '6' in the given sentence.
Example Output:
a cat sits and serats while on a wodniw sill