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: 'airplane flying in front of mountains and clouds'. Reverse all words of length '2' in the given sentence.
airplane flying ni front fo mountains and clouds

Sentence: 'dog lying on bottom of enclosed area with people'. Reverse all words of length '5' in the given sentence.
dog gniyl on bottom of enclosed area with people

Sentence: 'a man with goggles is in the air while skiing'. Reverse all words of length '4' in the given sentence.

a man htiw goggles is in the air while skiing