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 photo in an airport showing a backpack and a cell phone'. Reverse all words of length '8' in the given sentence.
a photo in an airport showing a kcapkcab and a cell phone

Sentence: 'there are two men sitting on a park bench'. Reverse all words of length '5' in the given sentence.
ereht are two men sitting on a park hcneb

Sentence: 'two men are holding a surfboard and body boards near the beach shower'. Reverse all words of length '7' in the given sentence.

two men are gnidloh a surfboard and body boards near the beach shower