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 city truck two city buses and a yellow fire hydrant'. Reverse all words of length '4' in the given sentence.
Example Output: a ytic truck two ytic buses and a yellow erif hydrant

Example Input: Sentence: 'a traffic light with road instructions directs traffic'. Reverse all words of length '4' in the given sentence.
Example Output: a traffic light htiw daor instructions directs traffic

Example Input: Sentence: 'a woman holds a concernedlooking domestic cat in her arms'. Reverse all words of length '2' in the given sentence.
Example Output:
a woman holds a concernedlooking domestic cat ni her arms