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 woman surfing while a man looks on behind her'. Remove all words of length '1' in the given sentence.
woman surfing while man looks on behind her

Sentence: 'a training going by a field during the daytime'. Remove all words of length '8' in the given sentence.
a going by a field during the daytime

Sentence: 'the sun has illuminated the messed up room'. Remove all words of length '11' in the given sentence.

the sun has the messed up room