If this is your file, export a “clean” copy for reference, but keep the marked version for focused error analysis. Re-listen to the audio tracks for any unit where you scored less than 80% (or equivalent “3 out of 5”).
The document titled “3.Marks - English Pronunciation in Use - Elementary.pdf” appears to be a personalized, annotated version of the standard English Pronunciation in Use (Elementary) by Jonathan Marks. Unlike a clean, digital master copy, the presence of “3.Marks” in the filename suggests either a third edition or, more likely, a specific student’s workbook containing three distinct types of corrections or scores. This write-up examines the pedagogical value of such a marked-up PDF.
A Closer Look at a Marked-Up Pronunciation Guide: Tracking Learner Progress