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: 'two motorcycles driving on road one making a left hand turn'. Reverse all words of length '7' in the given sentence.
two motorcycles gnivird on road one making a left hand turn

Sentence: 'a herd of horses is exercised in the yard led by a man on horseback'. Reverse all words of length '6' in the given sentence.
a herd of sesroh is exercised in the yard led by a man on horseback

Sentence: 'a couple of giraffes standing in opposite directions of each other'. Reverse all words of length '8' in the given sentence.

a couple of seffarig gnidnats in etisoppo directions of each other