However, I can give you a of the workbook itself (based on the known Realidades 1 curriculum) and cautionary notes about PDF versions: General review of the Realidades 1 Core Practice Workbook

I cannot produce a full review of the Realidades 1 Core Practice Workbook PDF because I do not have access to the actual PDF file, nor can I verify specific page numbers, exercise content, or whether a given online PDF is a legal, complete copy.