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.
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Question: Sentence: 'a woman about to serve a tennis ball'. Reverse all words of length '2' in the given sentence.

Answer: a woman about ot serve a tennis ball


Question: Sentence: 'the double decker bus is headed for its destination'. Reverse all words of length '2' in the given sentence.

Answer: the double decker bus si headed for its destination


Question: Sentence: 'a hand is holding a black mp3 player'. Reverse all words of length '2' in the given sentence.

Answer:
a hand si holding a black mp3 player