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.

Q: Sentence: 'a large flock of birds flying over a field next to a  tree'. Remove all words of length '2' in the given sentence.

A: a large flock birds flying over a field next a tree
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Q: 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: a young man ready to serve a tennis ball to his opponent
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Q: Sentence: 'men doing tricks in the air on their skateboards'. Remove all words of length '6' in the given sentence.

A:
men doing in the air on their skateboards
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