L1,L2 ,EAD applied at the same time. L1 got RFE.

You very well may need to refile if the L1 extension was ultimately denied, and that application was the basis for your L2.

Can I appeal against the decision of my I-94 Extension rejection?

Yes, one can appeal a denied application for extension of L1b.

Volunteer work does not violate your status.

Hi my name is nikita i have permenant residence card from 5 years but i was out of the USA for 1000 days , now i m back in the u

No, once you are out of the US for one year, the five years starts over again. Moreover you may have abandoned your residency by your long absence.

Hi my name is nikita i have permanent residence card from 5 years but i was out of the USA for 1000 days , now i m back in the u

No. First, you may have abandoned your status. Second, the five years starts over again once you are gone for 365 days.

Can I get in trouble If I re-entry the US too soon?

The problem is not only the brief absence but the coming to look at schools. Your visitors visa should note that this is the purpose of your trip...

My question is can I get a copy of I-94 lost about 21 years ago. I need it to prove that I entered legally I already sent I-485

It may be too late, but the stamp in your passport also proves it, and you can file an I-102 for replacement I-94 card.

I had a Temp green card. Filed for adjsutment from temp to perm...it was denied in 95 or 96. I married in 2000 with two kids. I

I understand you filed for removal of condition and the application was denied and your status was terminated. Yes, you can file for adjustment...

When's the latest i can send my I751?

December 1, 2012. However if you are late, you can include an explanation for your tardiness.

Immigration .. Is there ANY relief for an LPR in US for only 3 years?

Sounds like an aggravated felony convictions as a crime of violence, but an attorney should review the papers and not rely on your verbal...