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 sandwich that is on a plate on a table'. Reverse all words of length '8' in the given sentence.
a hciwdnas that is on a plate on a table

Sentence: 'an elephant is standing in the road by the truck'. Reverse all words of length '5' in the given sentence.
an elephant is standing in the road by the kcurt

Sentence: 'a large bridge with traffic flowing across it'. Reverse all words of length '7' in the given sentence.

a large bridge with ciffart gniwolf across it