和I-485一起递I-765。C9（婚姻）需不需要交I-765的费用？
USCIS网站是这样写的。和表里的instruction 有点不同。不太确定。
Special Instructions :
If you filed a Form I-485, Application to Register Permanent Residence or Adjust Status, on July 30, 2007, or after, and you paid the I-485 application fee required, then no fee is required to file a request for employment authorization on Form I-765. You may file the I-765 concurrently with your I-485, or you may submit the I-765 at a later date. If you file Form I-765 separately, you must also submit a copy of your Form I-797C, Notice of Action, receipt as evidence of the filing of an I-485.