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 toilet and a roll of toilet paper'. Reverse all words of length '2' in the given sentence.
a toilet and a roll fo toilet paper

Sentence: 'a group of snow boarders pose in the snow on top of a hill'. Reverse all words of length '5' in the given sentence.
a puorg of snow boarders pose in the snow on top of a hill

Sentence: 'a black and white zebra walking by logs and a rock'. Reverse all words of length '7' in the given sentence.

a black and white zebra gniklaw by logs and a rock