when did you lose your umbrella 还是 When have you…?

When did you lose your bag? When＿you＿（lose）your umbrella? when you lose your when did you lost your umbrella?这句子对吗 when did you have it When did you have dinner When you lose do not your confidence When you lose don't lose your confidence. when you lose don't lose your confdence是什么意思 When ( )you your( ) dictionary?A did ;lose B has; lost C wil When ____ you finish your work?填did还是do 英语翻译Have you done your homework yet?Yes,I have.when did you