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: 'a table with different dishes of food on it'. Reverse all words of length '4' in the given sentence.
a table htiw different dishes of doof on it

Sentence: 'a man being towed behind a boat on a board'. Reverse all words of length '4' in the given sentence.
a man being towed behind a taob on a board

Sentence: 'a cow and a calf in a field on a sunny day'. Reverse all words of length '4' in the given sentence.

a cow and a flac in a field on a sunny day