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: 'the couple are smiling at each other as they sit on a bench'. Reverse all words of length '4' in the given sentence.
the couple are smiling at hcae other as yeht sit on a bench

Sentence: 'a man and woman standing with luggage in a waiting area'. Reverse all words of length '7' in the given sentence.
a man and woman standing with egaggul in a gnitiaw area

Sentence: 'a room with an open suitcase on the floor and clothes strewn about'. Reverse all words of length '2' in the given sentence.

a room with na open suitcase no the floor and clothes strewn about

