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 messy bedroom with items covering the floor'. Reverse all words of length '8' in the given sentence.
a messy bedroom with items gnirevoc the floor

Sentence: 'a man is standing on a sidewalk with his bike'. Reverse all words of length '3' in the given sentence.
a nam is standing on a sidewalk with sih bike

Sentence: 'a group of people taking pictures in the snow with children'. Reverse all words of length '1' in the given sentence.

a group of people taking pictures in the snow with children