Where_____you______(study)before you came here?

Where_____you______(study)before you came here? Where _did__you _study___ (study) before you came here.为什么是d you see,before he came down here, 1How long----you----(study) english since you came here? 1.Before Mary came here,she_____(study) inAustralia.2.As not Where were you before you came here?I___(stay) in the UK for What did you do before you came here?-I ( )in a middle schoo before I came here,I___(have)breakfast he came here two hours before 改错 坐等He came here before there days. Did he tell you __ he came here for the day before yesterday i didn't know you had called the police before l came here