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 black and white cow grazing in a field of green grass'. Remove all words of length '1' in the given sentence.
black and white cow grazing in field of green grass

Sentence: 'an elephant eating a tree branch in a bare field'. Remove all words of length '2' in the given sentence.
elephant eating a tree branch a bare field

Sentence: 'a woman playing tennis at a tennis match'. Remove all words of length '7' in the given sentence.

a woman tennis at a tennis match