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 child is smiling for the camera while outside'. Reverse all words of length '1' in the given sentence.
a child is smiling for the camera while outside

Sentence: 'a person on a parachute landing on the water'. Reverse all words of length '2' in the given sentence.
a person no a parachute landing no the water

Sentence: 'a glass top desk with a laptop open on it'. Reverse all words of length '2' in the given sentence.

a glass top desk with a laptop open no ti