According to tyhe poster, you should call 911 when .
A: you have lost something important
B: you have seen a suspicious activity
C: you have difficulty finding your way home
D: you have seen any burned-out streetlights
A: you have lost something important
B: you have seen a suspicious activity
C: you have difficulty finding your way home
D: you have seen any burned-out streetlights
举一反三
- ______ a pleasant journey on your way home! A: May you have B: Must you have C: Do you have D: Will you have
- Contact me at once _______ any problem. A: you should have B: have you C: should you have D: you have
- Never before ____, so you are not a friend of mine. A: I saw you B: I have seen you C: have I seen you D: had I see you
- You have never seen the film before,( )? A: haven't you B: don't you C: have you D: do you
- late latelyHe arrived home ___.Have you seen Tom ___?