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 Q]: Sentence: 'a pair of melted scissors on top of a reflective surface'. Reverse all words of length '7' in the given sentence.
[EX A]: a pair of melted scissors on top of a reflective ecafrus

[EX Q]: Sentence: 'a black cow stands alone in a grassy field'. Reverse all words of length '3' in the given sentence.
[EX A]: a black woc stands alone in a grassy field

[EX Q]: Sentence: 'a guy and a cat look at a glowing light'. Reverse all words of length '5' in the given sentence.
[EX A]:
a guy and a cat look at a glowing thgil