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: 'three planes being serviced at the airport on a sunny day'. Reverse all words of length '2' in the given sentence.
three planes being serviced ta the airport no a sunny day

Sentence: 'a couple of men on a court holding tennis rackets'. Reverse all words of length '2' in the given sentence.
a couple fo men no a court holding tennis rackets

Sentence: 'a group of people that are sitting in a boat'. Reverse all words of length '6' in the given sentence.
a group of elpoep that are sitting in a boat