was/were your

[hurtado]

Where was your sister born? ¿¿¿Porque was y no were si se refiere al pronombre "tu???

 

[PSIONMAN]

Where was your sister born? ¿¿¿Porque was y no were si se refiere al pronombre "tu???

No. It refers to sister

Your sister was born in England

Where was your sister born?

 

[flightgoddess]

was applies to singular subjects, sister is one "Where was your sister born?"

were applies to plural subjects, "Where were your brothers born?"
but it also applies to a direct you, "Where were you born?