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.Part 2. Application Type:
I am applying for an adjustment to permanent resident status because:

A. A. An immigrant petition given me an immediately available immigration visa number that has been approved? Attach a copy of the approval notice or a relative petition

这个问题应该是选a吧？没有approval notice, 但是只要和130表格一起交就可以了吧。
-You are right.

2. Part3：Processing Information
Current Occupation:
妈妈退休十几年了， should i leave it blank?
-Yes.

3. List your present spouse and all of your children:
父亲已经去世了， 需要列出来吗？
-Not need.

4. Part5. Signature
我写了自己是Interpreter, 用中文给妈妈解释了表格，那么在part 6, Signature of person preparing form if other than obove我就不用再填自己是person preparing the form了吧？
-Correct.

5. town/city of birth
这次是按照妈妈刚办的出生公证上写的××县， 但是在我自己办绿卡填485写妈妈的出生地是我给她填的是××市， 这个县是属于这个市的，但是妈妈的485和我的485关于她的出生地不一致，会有问题吗？
-Fine.