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 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 family room area without anybody in it'. Reverse all words of length '7' in the given sentence.
Example Output: a family room area tuohtiw ydobyna in it

Example Input: Sentence: 'beach filled with people and umbrellas in the sand'. Reverse all words of length '3' in the given sentence.
Example Output:
beach filled with people dna umbrellas in eht sand