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 man with an afro getting a haircut at a barber shop'. Remove all words of length '1' in the given sentence.
man with an afro getting haircut at barber shop

Sentence: 'a girl in white blouse and black skirt holds a red tie up'. Remove all words of length '4' in the given sentence.
a in white blouse and black skirt holds a red tie up

Sentence: 'several animals standing next to each other in a grassy area with trees'. Remove all words of length '7' in the given sentence.

standing next to each other in a grassy area with trees