Yes, you can. But make sure your tutor can open it. Docx file, otherwise the tutor can't open your paper, and it's not good to guide you.

In addition, when defending, make sure that the demonstration computer used by the school can be turned on. Docx file, otherwise it will be very troublesome.

So, it is ok to write it in. docx。 But be sure to back up a. doc and carry it with you at any time, because not all computers have a higher version of office installed.