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 girl that looks sad sitting on the side of a street'. Remove all words of length '2' in the given sentence.
a girl that looks sad sitting the side a street

Sentence: 'a group of people skiing down the side of a snow covered slope'. Remove all words of length '7' in the given sentence.
a group of people skiing down the side of a snow slope

Sentence: 'a lady in pink sitting on a bench next to a man standing in a beige suit'. Remove all words of length '2' in the given sentence.

a lady pink sitting a bench next a man standing a beige suit