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.

Sentence: 'pineapple and hot dog skewers are shown as appetizers'. Reverse all words of length '9' in the given sentence.
elppaenip and hot dog skewers are shown as appetizers

Sentence: 'four pink roses in a water filled dish bowl'. Reverse all words of length '4' in the given sentence.
ruof knip roses in a water filled hsid lwob

Sentence: 'cows laying down and standing up eating on the hill'. Reverse all words of length '3' in the given sentence.

cows laying down dna standing up eating on eht hill