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 herd of zebra standing in a forest'. Reverse all words of length '1' in the given sentence.
a herd of zebra standing in a forest

Sentence: 'a shirtless man lays on a bed and smiles'. Reverse all words of length '9' in the given sentence.
a sseltrihs man lays on a bed and smiles

Sentence: 'a lone giraffe is walking through the field'. Reverse all words of length '7' in the given sentence.

a lone effarig is gniklaw hguorht the field