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 group of people riding in a black raft'. Reverse all words of length '1' in the given sentence.
a group of people riding in a black raft

Sentence: 'the bathroom has a toilet a window and a sink'. Reverse all words of length '8' in the given sentence.
the moorhtab has a toilet a window and a sink

Sentence: 'a cart with a motor bike on the back of it'. Reverse all words of length '4' in the given sentence.

a trac htiw a motor ekib on the kcab of it