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 number of benches at the beach and a boat in the sea'. Remove all words of length '7' in the given sentence.
a number of at the beach and a boat in the sea

Sentence: 'a dog laying in the grass chewing a stick'. Remove all words of length '6' in the given sentence.
a dog in the grass chewing a stick

Sentence: 'an orange dump truck parked in a yard'. Remove all words of length '1' in the given sentence.

an orange dump truck parked in yard