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: 'there is a group of people standing on the beach'. Reverse all words of length '8' in the given sentence.
Example Output: there is a group of people gnidnats on the beach

Example Input: Sentence: 'two baseball players look on awaiting the pitch to be made'. Reverse all words of length '5' in the given sentence.
Example Output: two baseball players look on awaiting the hctip to be made

Example Input: Sentence: 'a woman sitting down in front of bowls and baskets of food'. Reverse all words of length '1' in the given sentence.
Example Output:
a woman sitting down in front of bowls and baskets of food