Under '5. Cloze test with/without clues', it explains: 'In cloze tests there are recurrent gaps at every 4th, 5th, 6th or 7th word... Unlike the gap filling activity that tests a particular grammar item (e.g. preposition, article, pronoun, or verb), it is a test for vocabulary (key words) in general.'
Class 6 › English Grammar and Composition › Chapter 11: Answer Key, Sample Question and Guidelines › Topic: Guidelines for Gap Filling (with/without clues)
Aligned to the NCTB national curriculum.