In this task, you need to remove 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 tired dogi s sleeping on the couch'. Remove all words of length '8' in the given sentence.
a tired dogi s on the couch

Sentence: 'a couple of airplanes sitting outside of a building'. Remove all words of length '1' in the given sentence.
couple of airplanes sitting outside of building

Sentence: 'two cats are standing on their hind legs and drinking milk from a cow which is being milked'. Remove all words of length '8' in the given sentence.

two cats are on their hind legs and milk from a cow which is being milked