回複：J1 waiver填表求助

My answer to your questions:

6. Your last landing date & place before your J1. If you have ever traveled outside US on J1, it should be the landing date & place of your return on J1;

10. leave it blank if you do not have one. If you have ever had a EAD card from INS, you should use the number shown on the EAD card;

11. yes, don't worry about it.

12. Just write a paragraph and list all your visa status with start & end date & place you stayed & purpose on that visa;

13. You should be able to find the answer in your DS-2019 form.

Hope these are helpful to your case. Good luck!