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.

Ex Input:
Sentence: 'several people flying kites on a sandy beach'. Reverse all words of length '7' in the given sentence.

Ex Output:
lareves people flying kites on a sandy beach

Ex Input:
Sentence: 'a baseball player tossing a ball to another player'. Reverse all words of length '2' in the given sentence.

Ex Output:
a baseball player tossing a ball ot another player

Ex Input:
Sentence: 'a couple of white toilets in a small room'. Reverse all words of length '1' in the given sentence.

Ex Output:
a couple of white toilets in a small room