1. (2018九上·高要月考) 根据对话内容及问题，选择正确答案（   ）

Jack, what did you do on your vacation?<br />I went to Singapore.<br />When did you come back?<br />Last Friday.<br />Question.<br />When did Jack come back from Singapore?<br />Jack, what did you do on your vacation?<br />I went to Singapore.<br />When did you come back?<br />Last Friday.<br />Question.<br />When did Jack come back from Singapore?