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 herd of zebra standing in a forest'. Reverse all words of length '1' in the given sentence.
a herd of zebra standing in a forest

Sentence: 'three people on a tennis court playing tennis'. Reverse all words of length '6' in the given sentence.
three elpoep on a sinnet court playing sinnet

Sentence: 'a glass of iced coffee sits next to chocolate eclairs on a tray'. Reverse all words of length '6' in the given sentence.

a glass of iced eeffoc sits next to chocolate eclairs on a tray