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 pair of bikers riding past a kite store'. Reverse all words of length '6' in the given sentence.
Example Output: a pair of srekib gnidir past a kite store

Example Input: Sentence: 'a computer keyboard and mouse sit on a desk'. Reverse all words of length '5' in the given sentence.
Example Output: a computer keyboard and esuom sit on a desk

Example Input: Sentence: 'a man bottle feeding a small elephant in a field'. Reverse all words of length '7' in the given sentence.
Example Output:
a man bottle gnideef a small elephant in a field