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 young man getting ready to serve a tennis ball to his opponent'. Remove all words of length '7' in the given sentence.
a young man ready to serve a tennis ball to his opponent

Sentence: 'a small child with a helmet is on skis'. Remove all words of length '2' in the given sentence.
a small child with a helmet skis

Sentence: 'several giraffes move through an enclosed area as people observe'. Remove all words of length '4' in the given sentence.

several giraffes through an enclosed as people observe