If you go by car, by bike or on foot, you must know the .A.traffic rules B.traffic C.traffic light
A: _______ that on the desk ? B: It's a photo.
A: This is your father's pen, I think. B: No, it's _______.
A: Is that your purse? B:_______ .
A: Where is Gao Shan? B:_______ .
A: May I have a rubber _______ my friend ? B: Sure.