--What were you doing when your father ( )back from Sydney y

--What were you doing when your father ( )back from Sydney y －what were you doing when your father came back? what were you doing when your father （came） back? When your father came to the school,what were you doing?改为同义 Were your doing your homework when your father came back?A,d what()you(do)when your father comes back what were you doing when he arrived When did your father come back home from Shanghai?___ When will your father come back from Beijig? ________ when did your father come back from shanghai what you when your mother came back? TIM：WHAT were you doing when China got the 2008Olympics?Do y