Will we be able to use filing date or it will be the final action date for I-485 filing?

Yes you may use the filing date for AOS.

Will my I-485 be rejected if submitted without i944 form? Or request for further evidence?

It will likely be rejected at this point given timing of filing.

It depends on the nature of your filing. I751 cases can take 12-24 months for processing.

I submitted the I-485 for my husband two years ago (approved) now i want to apply for the I-130 for my parents and brother ?

You may do so assuming you are a USC over the age of 21.

Can I adopt my sister and come with her in United States?

The previous failure to disclose may impact subsequent filing. Consult with an attorney in private for guidance.

Can my wife cancel my process if get divorce and i can prove that I got verbal ,financial emotional psychological abuse ?

Best to contact an experienced attorney to determine if you have a possible VAWA claim.

You only need to provide this information if beneficiary is physically in the US.

Best to contact USCIS directly about error.

No but you will need both passports for travel purposes.

How to fill out the I-864 if my petitioner is housewife

Yes you may indicate status of unemployed.