Definition: In this task, you need to reverse 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.
Input: Sentence: 'you will not get anywhere if you open these doors and try to pass through'. Reverse all words of length '7' in the given sentence.

you will not get anywhere if you open these doors and try to pass hguorht