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 male cow walking down a street with shanties'. Reverse all words of length '7' in the given sentence.
a male cow gniklaw down a street with shanties

Sentence: 'a large delta airlines airplane on the runway'. Reverse all words of length '6' in the given sentence.
a large delta airlines airplane on the yawnur

Sentence: 'a couple of giraffes standing in front of a metal fence'. Reverse all words of length '8' in the given sentence.

a couple of seffarig gnidnats in front of a metal fence