When did you start out?

When did you start out? when did you start to______? When did you start skating? when did you start your homework when did you start to learn english? when did you start （）(hiccup) 1.--- When did you start colleting stamps? 怎样回答When did you start school? When did it start? when did you start collect easy book?如何回答 when did you start class today是什么时态 When did you start learning English怎么回答