( )(1)____ is this ?A. Whose B. How C. What
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.
A : What's that in English? B : _______ .