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 and woman standing with luggage in a waiting area'. Reverse all words of length '7' in the given sentence.
Example Output: a man and woman standing with egaggul in a gnitiaw area

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: 'two people near a stopped public transit bus'. Reverse all words of length '3' in the given sentence.
Example Output:
owt people near a stopped public transit sub