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 lone man smiles brightly in front of his computer'. Reverse all words of length '1' in the given sentence.
a lone man smiles brightly in front of his computer

Sentence: 'a street filled with traffic and a very long bus'. Reverse all words of length '4' in the given sentence.
a street filled htiw traffic and a yrev gnol bus

Sentence: 'a rug designed to look like a computer keyboard'. Reverse all words of length '2' in the given sentence.

a rug designed ot look like a computer keyboard