NIW RFE for F1 student.

I submitted my I-140 petition (NIW) myself 5 months ago. I now received the request for evidence. I don't know how to reply since I didn't hire a lawyer. One of the questions is " You are a F1 student. You will have practical training and H1B for up to 7 years. Please explain why your research can not continue if you are not granted NIW" I would appreciate friends who had replied to RFE help me on this and other questions. Thank you.