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: 'yogurt bananas and grapes stand ready to make a smoothie'. Reverse all words of length '7' in the given sentence.
Example Output: yogurt sananab and grapes stand ready to make a smoothie

Example Input: Sentence: 'a black and white clock reads serving central oregon'. Reverse all words of length '3' in the given sentence.
Example Output: a black dna white clock reads serving central oregon

Example Input: Sentence: 'a line of colorful boats sitting by a long deck'. Reverse all words of length '7' in the given sentence.
Example Output:
a line of colorful boats gnittis by a long deck