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 bus parked along the road at a bus stop'. Reverse all words of length '1' in the given sentence.
Example Output: a city bus parked along the road at a bus stop

Example Input: Sentence: 'several stacks of trunks in front of a building'. Reverse all words of length '8' in the given sentence.
Example Output: several stacks of trunks in front of a gnidliub

Example Input: Sentence: 'a group of four people playing the nintendo wii'. Reverse all words of length '2' in the given sentence.
Example Output:
a group fo four people playing the nintendo wii