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: 'three zebras are standing on a grassy field'. Reverse all words of length '1' in the given sentence.
Example Output: three zebras are standing on a grassy field

Example Input: Sentence: 'a baseball pitcher pitching a ball during a game'. Reverse all words of length '8' in the given sentence.
Example Output: a llabesab pitcher gnihctip a ball during a game

Example Input: Sentence: 'a man in a suit has a phone up to his face'. Reverse all words of length '1' in the given sentence.
Example Output:
a man in a suit has a phone up to his face