Is it legal/ok to continue work while waiting for biometric to be scheduled and opt going to expired soon?

You can work unless you anticipate problems with your marriage. Goodluck.

Good tax return income in 2007,2008 but low income tax return in 2009 coz he was out of sate does it affect to sponsor b2 visa.

Your tax refers to the Federal Tax Return not State. Goodluck.

I got approved I-360 as battered wife and now i am sending the package to UCSIS with the I-485

You will find the list on the instructions to I-485 or call the customer service. Goodluck.

That is none of your business. Goodluck.

ICE Lost my Friend's Valid Passport.What should i do ? OR How long process does it take ?

Contact the Indian Embassy for assistance with passport or emergency travel document. Goodluck.

File an I-130 and got aproved. Now what?

You do not mention the reason for your ineligibility to adjust in the USA. It is advisable to contact an immigration lawyer for consultation on...

I received my I-797 Approval notice on December 10, 2009. Can I use that to apply for an EAD?

You have not stated what the approval notice relates to. Goodluck.

Asking for unemployment could affect my naturalization process?

Application for unemployment will not affect your N400 application. Goodluck.

I am on L2 visa. Can some employer sponsor my H1B directly or first I have to apply for EAD then employer can sponsor my H1B.

It's not mandatory to apply for EAD. You can apply for a cos to H1B. Goodluck.

Three last names on passport and one on greencard

You should not face a major challenge on re-entry. Goodluck.