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.

Example Input: Sentence: 'a person wearing skis turned around in the snow'. Reverse all words of length '1' in the given sentence.
Example Output: a person wearing skis turned around in the snow

Example Input: Sentence: 'dog lying on bottom of enclosed area with people'. Reverse all words of length '5' in the given sentence.
Example Output: dog gniyl on bottom of enclosed area with people

Example Input: Sentence: 'a couple of ducks laying on the green grass'. Reverse all words of length '1' in the given sentence.
Example Output:
a couple of ducks laying on the green grass