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 woman about to serve a tennis ball'. Reverse all words of length '2' in the given sentence.
Example Output: a woman about ot serve a tennis ball

Example Input: Sentence: 'a beach chair and sandals in the sand'. Reverse all words of length '2' in the given sentence.
Example Output: a beach chair and sandals ni the sand

Example Input: Sentence: 'a piece of chocolate that is shaped like a cow'. Reverse all words of length '6' in the given sentence.
Example Output:
a piece of chocolate that is depahs like a cow