How i can stop,each time i come back to usa immigration services, send me to interview,for the same past problem?

I agree with my colleagues. Meet with an attorney.

Is withdrawal of existing i485 required

I would suggest you withdraw the first 485 that is showing as pending.

You should disclose it. It should not be a problem if it was outside of the statutory period.

Work permit can take up to 90 days.

U-visa application

You need the certification from the police that you have been helpful in the investigation in order to file.

F1 visa after marriage .when I will be eligible to work in the US ? when I can be able to quit school ?

I agree wit hAttorney Brown.

The forms for a visa k1 which are I-129f and G-325a have to be send to the USCIS together or separated? G-325a has to be

Together and for both

DV-2014 Selectee further processing options

Schedule a consultation with an attorney so you can receive detailed answers to all of your questions.

Do I need to wait for H1B extension before switching job if my I-140 is approved?

I would suggest consulting in private with an attorney before taking any action.

I give the lawyer 3700 and I didn't singe an agreement. For filing the immigration papers. He jus draft them up. Can I get bk

You may be entitled to a portion of it. The lawyer is entitled to keep that money for which s/he has performed work.