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 cat has is sticking its head in the toilet'. Reverse all words of length '8' in the given sentence.
Example Output: a cat has is gnikcits its head in the toilet

Example Input: Sentence: 'a small child having his teeth brushed by an adult'. Reverse all words of length '7' in the given sentence.
Example Output: a small child having his teeth dehsurb by an adult

Example Input: Sentence: 'a woman sitting next to a stove top oven'. Reverse all words of length '5' in the given sentence.
Example Output:
a namow sitting next to a evots top oven