Thank you @RobertB4444 . If that is the case, can I apply extension application and then file it after I pass my SPT? One another confusion is, the publication 519, https://www.irs.gov/pub/irs-pdf/p519.pdf , page 32, it says I cant claim standard deduction and it also says I cannot file married jointly in page 33 when I am a dual-status alien. Its very confusing!
