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.

Q: Sentence: 'a man is riding a skateboard at a skateboard park'. Reverse all words of length '1' in the given sentence.

A: a man is riding a skateboard at a skateboard park
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Q: Sentence: 'a lone man smiles brightly in front of his computer'. Reverse all words of length '1' in the given sentence.

A: a lone man smiles brightly in front of his computer
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Q: Sentence: 'a black bird standing on a tree limb'. Reverse all words of length '4' in the given sentence.

A:
a black drib standing on a eert bmil
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