当你上课迟到了,站在门口时你要说:A.Open the door, please. B. May I come in,please?
A: Do you like _______? B: No, I _______.
A: Is that _______ kite? B: Yes, it is.
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:_______ .