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 computer mouse and keyboard sitting next to a  monitor'. Remove all words of length '3' in the given sentence.
a computer mouse keyboard sitting next to a monitor

Sentence: 'a cow stretching its head over a fence to eat some leaves'. Remove all words of length '4' in the given sentence.
a cow stretching its a fence to eat leaves

Sentence: 'a teddy bear sitting on a blue pillow on a chair with a pink blanket on the back'. Remove all words of length '7' in the given sentence.

a teddy bear on a blue pillow on a chair with a pink on the back