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 man is riding a skateboard at a skateboard park'. Reverse all words of length '1' in the given sentence.
a man is riding a skateboard at a skateboard park

Sentence: 'read clocktower on the side of a water body'. Reverse all words of length '3' in the given sentence.
read clocktower on eht side of a water body

Sentence: 'an airplane being prepared for boarding at an airport'. Reverse all words of length '3' in the given sentence.

an airplane being prepared rof boarding at an airport