I highly appreciate the new material, it fills in a lot of gaps. Thanks.
Several exercise entries in 1.7 have their english translation jumbled/misplaced, e.g “Do you like baseball?” becomes “오빠는 야구를 좋아해요?”. I would suggest to proof-read the flashcards/speaking/listening sections of the NEW 1.x chapters, there are other areas where the translations are paired with the wrong entries.