To send me homework by e-mail, send it in an MSWord file as an attached file (other formats are possible, but .docx is the most common one for documents). Please give a file name with this format, with the hyphens:

your <last name-your first name-year-month-day.docx>

for example: tanaka-saburo-2021-06-21.docx

When I return your homework by email, you will see my corrections in it in red font. Please read this IMPORTANT DOCUMENT that explains how to use the reviewing and editing features of MSWord:
How to Track Changes and Accept Changes in MSWord