When did you start your work?——I__it until 11:50p.m.I think

when did you start working?I started work when I was twenty- when did you start your homework When did you start to work in this company?___ .I have worke Have you found your book yet? No,i'm not sure where i__it when did you start skating?——（ ） when did you start to______? When did you start skating? When did you start out? when did you start to play chess?______i was six .a .until b I think you should_____ your home work, until you consciously step in and start to work with your su When ____ you finish your work?填did还是do