Definition: 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.
Input: Sentence: 'a tall street pole with two streets signs on it and a light at the top'. Reverse all words of length '2' in the given sentence.

a tall street pole with two streets signs no ti and a light ta the top