—God！My cell phone is missing.—You ________ have left it at home.I heard you telephone our daughter in the bathroom.

If prices rise too high, the government has to do something _________ it. 

---______ he have been chosen as captain of our school football team? ---Yes, he______. Can’t you see he’s wearing an armband?

(2013·成都一诊)Parents are doing all they ________ to help their children achieve their ambitions.

——Must I leave the room now?——No，you    .